Skip to main content
Start triage

Start triage first, then route to emergency care.

Need urgent help? Start triage first, then route to emergency care.

Roxee Meds Catalog

Monensin

Medication catalog facts with explicit FDA-approval, off-label, source-limited, and safety context.

Both Catalog complete Livestock/food-animal use Non-Rx Type C free-choice medicated feed Multiple FDA sponsors Official label facts Owner quick guide first

Veterinary professional?

Showing simplified owner view. Switch to Vet View for full technical detail.

Data freshness

Storefront facts
Catalog refreshed
May 5, 2026, 10:05 a.m.

These are the storefront facts Roxee uses on browse cards and quick facts.

FDA applications
FDA application data refreshed
May 5, 2026, 10:00 a.m.

Sponsor, product, and application records imported from Animal Drugs @ FDA.

Safety reports
No safety reports linked
No refresh timestamp yet

openFDA reaction terms and case summaries are supporting evidence, not proof of causality.

Source timing details
Source timing details
  • Storefront facts: Source Roxee | Refreshed May 5, 2026, 10:05 AM UTC
    The storefront fact projection used for browse cards and quick facts.
  • Animal Drugs @ FDA: Source FDA | Refreshed May 5, 2026, 10:00 AM UTC
    Applications/products are imported from FDA export data.
  • Animal Drugs @ FDA previews: Source FDA | Refreshed Feb 9, 2026, 3:05 AM UTC
    Label highlights/doc links are fetched from FDA preview endpoints.

Evidence

Reviewed / Updated / Sources

Reviewed by: Not available

Last reviewed: April 22, 2026

Updated: April 22, 2026, 10:07 AM UTC

Sources:
Image coming soon
Monensin

Monensin

Drug type: Food-animal record • Generic profile Livestock/food-animal use

Both Type C free-choice medicated feed Non-Rx 100% storefront ready

Species: Both

Approval status: Food-animal or livestock record. This source record is for livestock or food-animal use, not a dog/cat medication profile. Food-animal rules, withdrawal intervals, and residue restrictions may apply.

Medication Snapshot

Merged from the current Roxee medication system with field-level provenance, freshness, and completeness tracking.

Monensin

For improved feed efficiency; for improved pigmentation by enhancing carotenoid and xanthophyll utilization; for the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E. acervulina, E. maxima, E. brunetti, and E. mivati. For the prevention of coccidiosis in turkeys caused by Eimeria adenoeides , E.meleagrimitis and E. gallopavonis . To aid in the prevention of coccidiosis caused by Eimeria necatrix , E. tenella , E. acervulina , E. brunetti , E. mivati , and E. maxima . Species commonly shown: Both, Replacement beef heifers on pasture, Growing beef steers and heifers on pasture (stocker, feeder, and slaughter).

Generic name
Monensin
Brand names
MoorMan's® Mintrate® Red Block RU MoorMan's® Mintrate® Blonde Block RU, Coban™, Monovet® 90, Coxidin® 90
Manufacturer
Multiple FDA sponsors
Species
Both, Replacement beef heifers on pasture, Growing beef steers and heifers on pasture (stocker, feeder, and slaughter), Bobwhite Quail, Growing
Dosage forms
Type C free-choice medicated feed, Medicated Feed, Type A medicated articles for use in the manufacture of Type B and Type C medicated feeds, Type A medicated articles to be used in the manufacture of Type C medicated feeds
Prescription
Non-prescription
Completeness
100%
Validation
Complete
Brand names
MoorMan's® Mintrate® Red Block RU MoorMan's® Mintrate® Blonde Block RU Coban™ Monovet® 90 Coxidin® 90 Rumensin™ 90 Rumensin™ 113
Dosage forms
Type C free-choice medicated feed Medicated Feed Type A medicated articles for use in the manufacture of Type B and Type C medicated feeds Type A medicated articles to be used in the manufacture of Type C medicated feeds Type A Medicated Article

Indications / Uses

For improved feed efficiency; for improved pigmentation by enhancing carotenoid and xanthophyll utilization; for the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E. acervulina, E. maxima, E. brunetti, and E. mivati. For the prevention of coccidiosis in turkeys caused by Eimeria adenoeides , E.meleagrimitis and E. gallopavonis . To aid in the prevention of coccidiosis caused by Eimeria necatrix , E. tenella , E. acervulina , E. brunetti , E. mivati , and E. maxima .

Warnings / Contraindications

Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used within 4 weeks of manufacture. As monensin sodium. Do not allow horses or other equines access to formulations containing monensin. Ingestion of monensin by equines has been fatal. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Not for replacement chickens intended to become broiler breeding chickens. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for replacement chickens intended to become broiler breeding chickens.

  • Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used within 4 weeks of manufacture. As monensin sodium. Do not allow horses or other equines access to formulations containing monensin. Ingestion of monensin by equines has been fatal. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Not for replacement chickens intended to become broiler breeding chickens. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for replacement chickens intended to become broiler breeding chickens.

Side Effects

Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest.

FAQ

Both, Replacement beef heifers on pasture, Growing beef steers and heifers on pasture (stocker, feeder, and slaughter), Bobwhite Quail, Growing, Growing, Maintained in confinement except reproducing or lactating goats, Beef cows, Calves, excluding veal calves, Dairy cows, Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot, Growing beef steers and heifers fed in confinement for slaughter, Replacement beef and dairy heifers, Broilers, Laying hen replacement chickens, Layer breeder replacement chickens

No. Roxee does not currently show this as prescription-only.

Type C free-choice medicated feed, Medicated Feed, Type A medicated articles for use in the manufacture of Type B and Type C medicated feeds, Type A medicated articles to be used in the manufacture of Type C medicated feeds

Related Conditions

Source Transparency

Add to My Pet's Meds

Choose a pet, confirm current or past, and optionally add reminder notes.

Sign in to save this medication to your pet profile.

Sign in to continue

Pet Owner Quick Guide

Start here first for the safest next-step summary before the deeper medication detail.

Used for:

For improved feed efficiency.

Dosing note:

Exact dosing depends on your pet's species, weight, and health status. Use your veterinarian's instructions for the exact dose and schedule.

What to watch for:

  • Do not feed to laying chickens
  • Feed continuously as the sole ration
  • Withdraw 5 days before slaughter
  • As sole source of organic arsenic
  • Feed must be used within 4 weeks of manufacture
  • As monensin sodium
  • Do not allow horses or other equines access to formulations containing monensin
  • Ingestion of monensin by equines has been fatal
  • Do not feed to chickens over 16 weeks of age
  • Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin
  • Ingestion of monensin by horses and guinea fowl has been fatal
  • Some strains of turkey coccidia may be monensin tolerant or resistant
  • Monensin may interfere with development of immunity to turkey coccidiosis
  • Not for replacement chickens intended to become broiler breeding chickens
  • In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain
  • Seizure NOS (1 reports)
  • Respiratory arrest (1 reports)
  • Recumbency (1 reports)

When to call the vet:

  • Repeated vomiting or diarrhea.
  • Severe lethargy (hard to wake, very low energy).
  • Collapse or fainting.
  • Trouble breathing.
  • Facial swelling or hives.
  • Blood in vomit or stool.

What to tell or ask your vet today:

  • Is this medicine the right fit for my pet’s current symptoms?
  • Which warning signs mean I should call back right away?
  • How should I handle missed doses or refusal to take the medicine?
Major cautions & emergency warning signs

Side effects to monitor:

  • Do not feed to laying chickens
  • Feed continuously as the sole ration
  • Withdraw 5 days before slaughter
  • As sole source of organic arsenic
  • Feed must be used within 4 weeks of manufacture

Most reported reactions:

  • Seizure NOS (1 reports)
  • Respiratory arrest (1 reports)
  • Recumbency (1 reports)

Emergency warning signs:

  • Repeated vomiting or diarrhea.
  • Severe lethargy (hard to wake, very low energy).
  • Collapse or fainting.
  • Trouble breathing.

Quick Facts

Official label facts first, then secondary summaries. Marketing content is separated below.

Species: Both
Manufacturer: Multiple FDA sponsors
Form: Medicated Feed, Type A Medicated Article, Type A medicated articles for use in the manufacture of Type B and Type C medicated feeds, Type A medicated articles to be used in the manufacture of Type C medicated feeds, Type C free-choice medicated feed
Identifiers:
ANADA: 200211 ANADA: 200263 ANADA: 200354 ANADA: 200375 ANADA: 200422 ANADA: 200424 ANADA: 200448 ANADA: 200479 ANADA: 200480 ANADA: 200531 ANADA: 200533 ANADA: 200534 ANADA: 200544 ANADA: 200547 ANADA: 200559 ANADA: 200560 ANADA: 200561 ANADA: 200562 ANADA: 200566 ANADA: 200567
Source metadata:

Warnings / Contraindications

Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used within 4 weeks of manufacture. As monensin sodium. Do not allow horses or other equines access to formulations containing monensin. Ingestion of monensin by equines has been fatal. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Not for replacement chickens intended to become broiler breeding chickens. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for replacement chickens intended to become broiler breeding chickens.

  • High: Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used within 4 weeks of manufacture. As monensin sodium. Do not allow horses or other equines access to formulations containing monensin. Ingestion of monensin by equines has been fatal. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Not for replacement chickens intended to become broiler breeding chickens. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for replacement chickens intended to become broiler breeding chickens.
Source metadata:

Adverse Reactions

Snapshot first, detailed rows second. This section summarizes signal data and is not a diagnosis.

Tap or hover a reaction to see what it means in plain language.

Tracked signals
7
Reported cases
7
Serious reports
7
Species represented
1
Grouped by Body System
Digestive (1) · Drooling Neurologic (1) · Seizure NOS Other (5) · Respiratory arrest, Recumbency, Hypothermia
Most Reported Reactions
Reaction Body system Cases Species Serious cases
Neurologic 1 Dog 1
Other 1 Dog 1
Other 1 Dog 1
Other 1 Dog 1
Digestive 1 Dog 1
Other 1 Dog 1
Other 1 Dog 1

Species coverage: Dog (7)

View detailed reaction table
Reaction Body system Species Seriousness Frequency Reports
Neurologic Dog Serious - 1
Other Dog Serious - 1
Other Dog Serious - 1
Other Dog Serious - 1
Digestive Dog Serious - 1
Other Dog Serious - 1
Other Dog Serious - 1
Source metadata:

Documents

Owner handouts and official technical documents open on-page first, with the original source still one click away.

Owner handouts

0
No owner handouts linked yet.

Official label / PI

16

SPL

6

FOI

82

095-735

Official label / PI · EA

095-735

Official label / PI · FONSI

095-735

Official label / PI · EA

095-735

Official label / PI · FONSI

095-735

Official label / PI · EA

095-735

Official label / PI · FONSI

095-735

Official label / PI · EA

095-735

Official label / PI · FONSI

095-735

Official label / PI · EA

095-735

Official label / PI · FONSI

130-736

Official label / PI · EA

130-736

Official label / PI · FONSI

130-736

Official label / PI · EA

130-736

Official label / PI · FONSI

130-736

Official label / PI · EA

130-736

Official label / PI · FONSI

Rumensin™ 90

SPL · SPL

FDA Structured Product Label

Rumensin™ 90 Rumensin™ 113

Rendered from Roxee's cached FDA SPL package contents for on-page reading. Use Open original for the raw FDA ZIP/XML source.

Sponsor
Elanco US Inc.
NADA
95735
Status
OTC
Form
Type A Medicated Article
Route
Oral
Species
Maintained in confinement except reproducing or lactating goats • Beef cows • Calves, excluding veal calves • Dairy cows • Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot • Growing beef steers and heifers fed in confinement for slaughter • Replacement beef and dairy heifers
Composition / specifications
Monensin™ 90: Monensin USP, 90.7 g per pound

Growing beef steers and heifers fed in confinement for slaughter

Indication
For improved feed efficiency.
Dosage

Feed continuously in a complete feed 5 to 40 g/ton monensin on a 90% dry matter basis to provide 50 to 480 mg monensin per head per day. No additional improvement in feed efficiency has been shown from feeding monensin at levels greater than 30 g/ton (360 mg monensin per head per day).

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Indication
For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.
Dosage

Feed continuously 10 to 40 g/ton to provide 0.14 to 0.42 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 480 mg of monensin per head per day.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Beef Cows

Indication
For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.
Dosage

Feed at a rate of 0.14 to 0.42 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 200 mg per head per day. During the first 5 days, pastured cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Indication
For improved feed efficiency when receiving supplemental feed.
Dosage

Feed continuously at 50 to 200 mg per head per day. Blend into a minimum of 1 pound of Type C medicated feed and either hand feed or mix into the total ration. Feed (other than the Type C medicated feed containing Rumensin) can be restricted to 95% (of normal requirements) when 50 mg of monensin activity is fed, and to 90% at 200 mg. Cows on pasture or in dry lot must receive a minimum of 1 pound of Type C medicated feed per head per day. Additionally, a minimum of 16 pounds (air-dry basis) of roughage such as silage, haylage, ammoniated straw, hay or equivalent feedstuffs should be fed in order to meet NRC recommendations for beef cows to gain 0.25 to 0.75 pounds per head per day. Standing, dried winter range forage may not be of adequate quality to result in improved e¬fficiency when supplemented with Rumensin. During the first 5 days, pastured cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed. Do not self feed.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Goats maintained in confinement except reproducing or lactating goats

Indication

For the prevention of coccidiosis caused by Eimeria crandallis, Eimeria christenseni, and Eimeria ninakohlyakimovae.

Dosage

20 grams per ton of complete feed continuously as the sole ration.

Limitations

Feed only to goats maintained in confinement. Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot and Replacement beef and dairy heifers

Indication
For increased rate of weight gain.
Dosage

Feed this supplemental Type C medicated feed containing 15 to 400 g monensin per ton. 

During the first 5 days, cattle should receive 50 to 100 mg monensin per head per day in a minimum of 1 pound of Type C medicated feed. After 5 days, feed at a rate of 50 to 200 mg monensin per head per day in a minimum of 1 pound of Type C medicated feed OR at a rate of 400 mg monensin per head per day every other day in a minimum of 2 pounds of Type C medicated feed.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Indication

For coccidiosis prevention and control

Dosage

Feed this supplemental Type C medicated feed containing 15 to 400 g monensin per ton to provide 0.14 to 0.42 mg monensin per pound of body weight per day, depending upon severity of challenge. During the first 5 days, cattle should receive a maximum of 100 mg monensin per head per day in a minimum of 1 pound of Type C medicated feed. After 5 days, feed up to a maximum of 200 mg monensin per head per day in a minimum of 1 pound of Type C medicated feed.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Type C free-choice medicated feeds 

All Type C free-choice medicated feeds containing Rumensin must be manufactured according to an FDA-approved formula/specification. When using a formula/specification published in the Code of Federal Regulations (CFR), a Medicated Feed Mill license is not required. Use of Rumensin in a proprietary formula/specification not published in the CFR requires prior FDA approval and a Medicated Feed Mill license.

Calves (excluding veal calves)

Indication
For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.
Dosage

10 to 200 grams per ton of feed to provide 0.14 to 1.00 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 200 mg of monensin per head per day.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Dairy Cows

Indication
For increased milk production efficiency (production of marketable solids-corrected milk per unit of feed intake).
Dosage

Total Mixed Ration (complete feed): Feed continuously 11 to 22 g/ton monensin on a 100% dry matter basis.

Component Feeding Systems (including top dress): Feed continuously 11 to 400 g/ton monensin in a minimum of 1 pound Type C medicated feed per cow per day to provide 185 to 660 mg/head/day monensin to lactating cows or 115 to 410 mg/head/day monensin to dry cows.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing. You may notice reduced voluntary feed intake in dairy cows fed monensin. This reduction increases with higher doses of monensin fed. Rule out monensin as the cause of reduced feed intake before attributing to other causes such as illness, feed management, or the environment. You may notice reduced milk fat percentage in dairy cows fed monensin. This reduction increases with higher doses of monensin fed. You may notice increased incidence and treatment of cystic ovaries and metritis, reduced conception rates, increased services per animal, and extended days open and corresponding calving intervals in dairy cows fed monensin. Have a comprehensive and ongoing nutritional, reproductive and herd health program in place when feeding monensin to dairy cows.

MoorMan's® Mintrate® Red Block RU

SPL · SPL

FDA Structured Product Label

MoorMan's® Mintrate® Red Block RU MoorMan's® Mintrate® Blonde Block RU

Rendered from Roxee's cached FDA SPL package contents for on-page reading. Use Open original for the raw FDA ZIP/XML source.

Sponsor
ADM Animal Nutrition
NADA
115-581
Status
OTC
Form
Type C free-choice medicated feed
Route
Oral
Species
Replacement beef heifers on pasture • Growing beef steers and heifers on pasture (stocker, feeder, and slaughter)
Composition / specifications
Monensin as the base or the sodium salt, contains a minimum of 90 percent monensin activity derived from monensin A and a minimum of 95 percent derived from monensin A plus B. Approvals for Type A medicated articles containing 60 and 80 grams per pound.

Cattle (growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and replacement beef heifers on pasture)

Indication

For increased rate of weight gain, and for prevention and control of coccidiosis caused by Eimeria bovis and E. zuernii in growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and replacement beef heifers on pasture which may require supplemental feed.

Dosage

MoorMan's® Mintrate® Blonde Block RU is for growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and replacement beef heifers on pasture when maintained on good quality pasture or roughage. If the pasture is in short supply or poor quality, Mintrate Red Block RU is recommended. Before feeding, be sure cattle are accustomed to protein blocks by feeding unmedicated Mintrate Blocks for 30 to 60 day or until cattle have demonstrate ed proper consumption. As soon as cattle have demonstrated proper consumption, remove the non-medicated blocks and replace with the amount of Mintrate Blonde Block RU. Feed this block free-choice. Do not allow animals access to other protein blocks, salt or mineral while being fed this product. Recommended consumption of block is 0.34 to 1.33 lb per head per day to provide 50 to 200 mg monensin per head per day. A 10-day supply of blocks may be put out at one time. Place blocks near water or loafing areas. Not less than one block for each 10 to 12 animals is recommended. Additional blocks should be put out when the current blocks are 75% consumed.

MoorMan's® Mintrate® Blonde Block RU

SPL · SPL

FDA Structured Product Label

MoorMan's® Mintrate® Red Block RU MoorMan's® Mintrate® Blonde Block RU

Rendered from Roxee's cached FDA SPL package contents for on-page reading. Use Open original for the raw FDA ZIP/XML source.

Sponsor
ADM Animal Nutrition
NADA
115-581
Status
OTC
Form
Type C free-choice medicated feed
Route
Oral
Species
Replacement beef heifers on pasture • Growing beef steers and heifers on pasture (stocker, feeder, and slaughter)
Composition / specifications
Monensin as the base or the sodium salt, contains a minimum of 90 percent monensin activity derived from monensin A and a minimum of 95 percent derived from monensin A plus B. Approvals for Type A medicated articles containing 60 and 80 grams per pound.

Cattle (growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and replacement beef heifers on pasture)

Indication

For increased rate of weight gain, and for prevention and control of coccidiosis caused by Eimeria bovis and E. zuernii in growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and replacement beef heifers on pasture which may require supplemental feed.

Dosage

MoorMan's® Mintrate® Blonde Block RU is for growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and replacement beef heifers on pasture when maintained on good quality pasture or roughage. If the pasture is in short supply or poor quality, Mintrate Red Block RU is recommended. Before feeding, be sure cattle are accustomed to protein blocks by feeding unmedicated Mintrate Blocks for 30 to 60 day or until cattle have demonstrate ed proper consumption. As soon as cattle have demonstrated proper consumption, remove the non-medicated blocks and replace with the amount of Mintrate Blonde Block RU. Feed this block free-choice. Do not allow animals access to other protein blocks, salt or mineral while being fed this product. Recommended consumption of block is 0.34 to 1.33 lb per head per day to provide 50 to 200 mg monensin per head per day. A 10-day supply of blocks may be put out at one time. Place blocks near water or loafing areas. Not less than one block for each 10 to 12 animals is recommended. Additional blocks should be put out when the current blocks are 75% consumed.

Coban™

SPL · SPL

FDA Structured Product Label

Coban™

Rendered from Roxee's cached FDA SPL package contents for on-page reading. Use Open original for the raw FDA ZIP/XML source.

Sponsor
Elanco US Inc.
NADA
130-736
Status
OTC
Form
Medicated Feed
Route
Oral
Species
Bobwhite Quail, Growing • Growing

Growing Bobwhite Quail

Indication
For the prevention of coccidiosis in growing bobwhite quail caused by Eimeria dispersa and E. Lettyae.
Dosage

Monensin, 73 grams per ton

Limitations
Do not feed undiluted. Must be thoroughly mixed in feeds before use. Feed continuously as the sole ration. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for replacement chickens intended to become broiler breeding chickens.

Growing Turkeys

Indication
For the prevention of coccidiosis in turkeys caused by E. adenoeides, E. meleagrimitis, and E. gallopavonis.
Dosage
Monensin, 54 to 90 grams per ton
Limitations
Do not feed undiluted. Must be thoroughly mixed in feeds before use. Feed continuously as the sole ration. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for replacement chickens intended to become broiler breeding chickens.

Coxidin® 90

SPL · SPL

FDA Structured Product Label

Coxidin® 90

Rendered from Roxee's cached FDA SPL package contents for on-page reading. Use Open original for the raw FDA ZIP/XML source.

Sponsor
Huvepharma EOOD
ANADA
200-783
Status
OTC
Form
Type A medicated articles to be used in the manufacture of Type C medicated feeds
Route
Oral, in feed
Species
Bobwhite Quail, Growing • Growing • Broilers • Laying hen replacement chickens • Layer breeder replacement chickens

Broiler Chickens, Laying Hen Replacement Chickens, and Layer Breeder Replacement Chickens:

Indication

As an aid in the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E. acervulina, E. brunettiE. mivati, and E. maxima.

Dosage

Feed complete feed (90 to 110 g/ton) continuously as the sole ration.

Growing Turkeys

Indication

For the prevention of coccidiosis in turkeys caused by Eimeria adenoeides, E. meleagrimitis and E. gallopavonis.

Dosage

Feed complete feed (54 to 90 g/ton) continuously as the sole ration. The optimum level depends upon the severity of coccidiosis exposure.

Growing Bobwhite Quail

Indication

For the prevention of coccidiosis in growing Bobwhite quail caused by Eimeria dispersa and E. lettyae.

Dosage

Feed complete feed (73 g/ton) continuously as the sole ration.

Monovet® 90

SPL · SPL

FDA Structured Product Label

Monovet® 90

Rendered from Roxee's cached FDA SPL package contents for on-page reading. Use Open original for the raw FDA ZIP/XML source.

Sponsor
Huvepharma EOOD
ANADA
200-639
Status
OTC
Form
Type A medicated articles for use in the manufacture of Type B and Type C medicated feeds
Route
Oral
Species
Maintained in confinement except reproducing or lactating goats • Beef cows • Calves, excluding veal calves • Dairy cows • Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot • Growing beef steers and heifers fed in confinement for slaughter • Replacement beef and dairy heifers
Composition / specifications
90.7 g/lb (200 g/kg)

Growing beef steers and heifers fed in confinement for slaughter

Indication

For improved feed efficiency.

Dosage

Feed complete feed (5 to 40 g/ton) continuously to growing finishing beef cattle to provide not less than 50 nor more than 480 mg monensin per head per day.

Indication

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.

Dosage

Feed continuously (10 to 40 g/ton) to provide 0.14 to 0.42 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 480 mg of monensin per head per day.

Dairy Cows

Indication

For increased milk production efficiency (production of marketable solids-corrected milk per unit of feed intake).

Dosage

Total Mixed Rations (“complete feed”): Feed continuously to dry and lactating dairy cows a total mixed ration ("complete feed") containing 11 to 22 g/ton monensin on a 100% dry matter basis.

Component Feeding Systems (including top dress): Feed continuously to dry and lactating dairy cows a Type C Medicated Feed containing 11 to 400 g/ton monensin. The Type C Medicated Feed must be fed in a minimum of 1 pound of feed per cow per day to provide 185 to 660 mg/head/day monensin to lactating cows or 115 to 410 mg/head/day monensin to dry cows.

Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot and Replacement beef and dairy heifers

Indication

For increased rate of weight gain.

Dosage

Feed at the rate of not less than 50 nor more than 200 mg per head per day in not less than one pound of Type C Medicated Feed; or after the 5th day, feed at the rate of 400 mg per head per day every other day in not less than 2 pounds of Type C Medicated Feed. The monensin concentration in the Type C Medicated Feed must be between 15 and 400 grams per ton. During the first 5 days, cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed. Do not self feed.

Limitations

Free-Choice (Self-Fed) Medicated Feeds: All Free-choice medicated feeds must provide not less than 50 nor more than 200 mg monensin per head per day.

Indication

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.

Dosage

Feed at a rate to provide 0.14 to 0.42 mg per pound body weight per day, depending upon severity of challenge, up to a maximum of 200 mg per head per day. The monensin concentration in Type C Medicated Feed must be between 15 and 400 grams per ton. During the first 5 days, cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed.

Limitations

Free-Choice (Self-Fed) Medicated Feeds: All Free-choice medicated feeds must provide not less than 50 nor more than 200 mg monensin per head per day.

Beef cows

Indication

For improved feed efficiency when receiving supplemental feed.

Dosage

Feed continuously at a rate of 50 to 200 mg per head per day. Blend into a minimum of 1 pound of Type C Medicated Feed and either hand feed or mix into the total ration. Feed (other than the Type C Medicated Feed containing Monovet® 90) can be restricted to 95% (of normal requirements) when 50 mg of monensin activity is fed, and to 90% at 200 mg. Cows on pasture or in dry lot must receive a minimum of 1 pound of Type C Medicated Feed per head per day. Additionally, a minimum of 16 pounds (air-dry basis) of roughage such as silage, haylage, ammoniated straw, hay or equivalent feedstuffs should be fed in order to meet NRC recommendations for mature reproducing beef cows to gain 0.25 to 0.75 pounds per head per day. Standing, dried winter range forage may not be of adequate quality to result in improved efficiency when supplemented with Monovet® 90. During the first 5 days, pastured cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed. Do not self feed.

Indication

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.

Dosage

Feed at a rate of 0.14 to 0.42 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 200 mg per head per day. During the first 5 days, pastured cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed.

Goats maintained in confinement except reproducing or lactating goats

Indication

For prevention of coccidiosis caused by Eimeria crandallis, Eimeria christenseni, and Eimeria ninakohlyakimovae.

Dosage

Feed complete feed (20 g/ton) continuously to goats as the sole ration. Feed only to goats maintained in confinement.

Calves (excluding veal calves)

Indication

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.

Dosage

Feed at a rate of 0.14 to 1.00 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 200 mg of monensin per head per day. The monensin concentration in Type C Medicated Feed must be between 10 and 200 g/ton.

UCM377876.pdf

FOI · FOI

UCM287930.pdf

FOI · FOI

ucm064848.pdf

FOI · FOI

ucm064847.pdf

FOI · FOI

N-095735-Q-0435-OT-AA_foi.pdf

FOI · FOI

ucm064844.pdf

FOI · FOI

ucm064842.pdf

FOI · FOI

ucm064841.pdf

FOI · FOI

N095735_Supp_10-22-1990.pdf

FOI · FOI

UCM451834.pdf

FOI · FOI

ucm069808.pdf

FOI · FOI

N 130-736 Supp_03_23_1990.pdf

FOI · FOI

FOI Summary oA 200-783 Approved August 26, 2024.pdf

FOI · FOI

Corrected Freedom of Information Summary ANADA 200-639.pdf

FOI · FOI

FOI Summary oA 200-683 Approved February 1, 2021.pdf

FOI · FOI summary

FOI Summary oN 141-588 Approved April 7 2025_ceg_ef.pdf

FOI · FOI summary

FOI Summary oN 141-587 Approved April 8 2025_ceg_ef.pdf

FOI · FOI summary

FOI Summary oN 141-586 Approved April 7 2025_ceg_ef.pdf

FOI · FOI summary

FOI Summary oA 200-658 Approved October 11, 2019.pdf

FOI · FOI summary

FOI Summary oA 200-656 Approved October 11, 2019.pdf

FOI · FOI summary

FOI Summary oA 200-653 Approved October 11, 2019.pdf

FOI · FOI summary

UCM351227.pdf

FOI · FOI summary

ucm117181.pdf

FOI · FOI summary

ucm117190.pdf

FOI · FOI summary

ucm117191.pdf

FOI · FOI summary

FOI Summary oN 141-491 Approved March 26, 2018.pdf

FOI · FOI summary

UCM470925.pdf

FOI · FOI summary

UCM461134.pdf

FOI · FOI summary

UCM461126.pdf

FOI · FOI summary

UCM409022.pdf

FOI · FOI summary

UCM409016.pdf

FOI · FOI summary

UCM409000.pdf

FOI · FOI summary

UCM408914.pdf

FOI · FOI summary

UCM408912.pdf

FOI · FOI summary

UCM408905.pdf

FOI · FOI summary

UCM367496.pdf

FOI · FOI summary

UCM363845.pdf

FOI · FOI summary

UCM338174.pdf

FOI · FOI summary

UCM351217.pdf

FOI · FOI summary

UCM210550.pdf

FOI · FOI summary

UCM210705.pdf

FOI · FOI summary

ucm061376.pdf

FOI · FOI summary

UCM214397.pdf

FOI · FOI summary

UCM061362.pdf

FOI · FOI summary

ucm091534.pdf

FOI · FOI summary

ucm061355.pdf

FOI · FOI summary

UCM277810.pdf

FOI · FOI summary

ucm059307.pdf

FOI · FOI summary

UCM279076.pdf

FOI · FOI summary

ucm062336.pdf

FOI · FOI summary

UCM433793.pdf

FOI · FOI summary

ucm118046.pdf

FOI · FOI summary

ucm118035.pdf

FOI · FOI summary

ucm118036.pdf

FOI · FOI summary

UCM231537.pdf

FOI · FOI summary

UCM455055.pdf

FOI · FOI summary

N140937_Supp_8_13_1998.pdf

FOI · FOI summary

UCM477998.pdf

FOI · FOI summary

N138792_Supp_6_29_1994..pdf

FOI · FOI summary

ucm069884.pdf

FOI · FOI summary

UCM470932.pdf

FOI · FOI summary

UCM470929.pdf

FOI · FOI summary

UCM470931.pdf

FOI · FOI summary

N124309_Supp_6_29_1994.pdf

FOI · FOI summary

ucm069819.pdf

FOI · FOI summary

ucm069810.pdf

FOI · FOI summary

ucm059259.pdf

FOI · FOI summary

ucm117192.pdf

FOI · FOI summary

FOI Summary oA 200-652 Approved October 11, 2019.pdf

FOI · FOI summary

ucm061687.pdf

FOI · FOI summary

FOI Summary oA 200-808 Approved July 8, 2025.pdf

FOI · FOI summary

FOI Summary oA 200-807 Approved July 8, 2025.pdf

FOI · FOI summary

FOI Summary oA 200-802 Approved April 24, 2025-CG_EF.pdf

FOI · FOI summary

FOI Summary oA 200-801 Approved April 24, 2025.pdf

FOI · FOI summary

FOI Summary oA 200-800 Approved April 24, 2025.pdf

FOI · FOI summary

FOI Summary oA 200-799 Approved April 24, 2025.pdf

FOI · FOI summary

FOI Summary oA 200-798 Approved April 24, 2025.pdf

FOI · FOI summary

FOI Summary oA 200-797 Approved April 24, 2025.pdf

FOI · FOI summary

FOI Summary oA 200-725 Approved July 19, 2022.pdf

FOI · FOI summary

FOI Summary oN 141-591 Approved October 25, 2024.pdf

FOI · FOI summary

FOI Summary oN 141-590 Approved October 25, 2024.pdf

FOI · FOI summary

UCM472688.pdf

FOI · FOI summary

Veterinary reference (advanced)

Canonical medication sections are above. This legacy block remains available for deeper cross-reference without cluttering the primary workflow.

At a Glance

Quick facts and links to official labeling and safety signals.

Data freshness
  • Storefront facts: Source Roxee | Refreshed May 5, 2026, 10:05 AM UTC
    The storefront fact projection used for browse cards and quick facts.
  • Animal Drugs @ FDA: Source FDA | Refreshed May 5, 2026, 10:00 AM UTC
    Applications/products are imported from FDA export data.
  • Animal Drugs @ FDA previews: Source FDA | Refreshed Feb 9, 2026, 3:05 AM UTC
    Label highlights/doc links are fetched from FDA preview endpoints.
Official (FDA)
Identity: Generic ingredient • No FDA branded products linked
No official FDA brand rows linked yet for this ingredient.
Catalog species: Both FDA-labeled species: Beef cows, Bobwhite Quail, Broilers, Calves, Dairy cows, Growing, Growing beef steers and heifers fed in confinement for slaughter, Growing beef steers and heifers on pasture (stocker, Layer breeder replacement chickens, Laying hen replacement chickens, Maintained in confinement except reproducing or lactating goats, Replacement beef and dairy heifers, Replacement beef heifers on pasture
Rx/OTC: OTC
Form/route: Medicated Feed, Type A Medicated Article, Type A medicated articles for use in the manufacture of Type B and Type C medicated feeds, Type A medicated articles to be used in the manufacture of Type C medicated feeds, Type C free-choice medicated feed Oral, Oral, in feed
Applications: NADA 95735 • NADA 115-581 • NADA 130-736 • ANADA 200-783 • ANADA 200-639
Documents: 30 (FOI: 14) • SPL: 6 Label highlights Official documents
Safety (openFDA)
Top reactions: Dog 0 Cat 0 View
Case summaries: 0
openFDA reports are unverified and do not prove causation.

Explore
Related conditions: Coccidiosis Metritis
Linked using: Fda_Label (0.95), Fda_Label (0.95)

Diagnosis Codes

Diagnosis-code mappings are not available for this medication yet.

Counseling and Monitoring Highlights

Global Pet owner/Vet mode is controlled in the header. This section avoids duplicate in-page persona tabs.

Owner-facing counseling points
  • Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used within 4 weeks of manufacture. As monensin sodium. Do not allow horses or other equines access to formulations containing monensin. Ingestion of monensin by equines has been fatal. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Not for replacement chickens intended to become broiler breeding chickens. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for replacement chickens intended to become broiler breeding chickens. (Contraindication, High)
Top reaction signals
Seizure NOS (1) Respiratory arrest (1) Recumbency (1) Hypothermia (1) Drooling (1) Death (1) Circulatory shock (1)

Identifiers & Packages

Normalized identifiers (NDC/NADA/ANADA) and package metadata from regulator listings.

Identifiers
ANADA: 200211 ANADA: 200263 ANADA: 200354 ANADA: 200375 ANADA: 200422 ANADA: 200424 ANADA: 200448 ANADA: 200479 ANADA: 200480 ANADA: 200531 ANADA: 200533 ANADA: 200534 ANADA: 200544 ANADA: 200547 ANADA: 200559 ANADA: 200560 ANADA: 200561 ANADA: 200562 ANADA: 200566 ANADA: 200567 ANADA: 200583 ANADA: 200585 ANADA: 200596 ANADA: 200639
Package NDC Product NDC Form / Route Status
11311-971-50 11311 -
23243-0064-5 23243 -
23243-0064-9 23243 -
23243-7500-5 23243 -
58198-1321-9 58198 -
58198-1825-1 58198 -
58198-1825-2 58198 -
58198-1825-3 58198 -
58198-2501-1 58198 -
58198-2501-2 58198 -
58198-2501-3 58198 -
58198-3420-1 58198 -

Enriched Documents

Documents are tiered by source trust: Official, Clinical, Manufacturer, Marketing.

Data Sources & Change Log

Every non-trivial field is expected to include provenance and update timestamps.

Official 110 Clinical 15 Manufacturer 0 Marketing 0
Current Field Facts
  • contraindications: Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used w… (Clinical, 2026-04-15)
  • contraindications: Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used w… (Clinical, 2026-04-11)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-05-05)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-05-03)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-04-30)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-04-29)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-04-28)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-04-27)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-04-26)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-04-25)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-04-22)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-04-15)
  • side_effects: Top reported reactions (openFDA): Circulatory shock, Death, Hypersalivation, Hypothermia, Recumbency, Respiratory arrest. (Clinical, 2026-04-11)
  • usage: For improved feed efficiency; for improved pigmentation by enhancing carotenoid and xanthophyll utilization; for the prevention of coccidiosis caused by Eimeri… (Clinical, 2026-04-15)
  • usage: For improved feed efficiency; for improved pigmentation by enhancing carotenoid and xanthophyll utilization; for the prevention of coccidiosis caused by Eimeri… (Clinical, 2026-04-11)
  • contraindications: Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used w… (Official, 2026-05-05)
  • contraindications: Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used w… (Official, 2026-05-03)
  • contraindications: Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used w… (Official, 2026-04-30)
  • contraindications: Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used w… (Official, 2026-04-29)
  • contraindications: Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used w… (Official, 2026-04-28)
Recent Revisions
  • side_effects updated 2026-05-05 10:05 by etl_backfill • Backfilled from existing medication fields
  • contraindications updated 2026-05-05 10:05 by etl_backfill • Backfilled from existing medication fields
  • usage updated 2026-05-05 10:05 by etl_backfill • Backfilled from existing medication fields
  • side_effects updated 2026-05-03 10:05 by etl_backfill • Backfilled from existing medication fields
  • contraindications updated 2026-05-03 10:05 by etl_backfill • Backfilled from existing medication fields
  • usage updated 2026-05-03 10:05 by etl_backfill • Backfilled from existing medication fields
  • side_effects updated 2026-04-30 10:09 by etl_backfill • Backfilled from existing medication fields
  • contraindications updated 2026-04-30 10:09 by etl_backfill • Backfilled from existing medication fields
  • usage updated 2026-04-30 10:09 by etl_backfill • Backfilled from existing medication fields
  • side_effects updated 2026-04-29 10:05 by etl_backfill • Backfilled from existing medication fields
  • contraindications updated 2026-04-29 10:05 by etl_backfill • Backfilled from existing medication fields
  • usage updated 2026-04-29 10:05 by etl_backfill • Backfilled from existing medication fields
  • side_effects updated 2026-04-28 10:05 by etl_backfill • Backfilled from existing medication fields
  • contraindications updated 2026-04-28 10:05 by etl_backfill • Backfilled from existing medication fields
  • usage updated 2026-04-28 10:05 by etl_backfill • Backfilled from existing medication fields
  • side_effects updated 2026-04-27 10:05 by etl_backfill • Backfilled from existing medication fields
  • contraindications updated 2026-04-27 10:05 by etl_backfill • Backfilled from existing medication fields
  • usage updated 2026-04-27 10:05 by etl_backfill • Backfilled from existing medication fields
  • side_effects updated 2026-04-26 10:06 by etl_backfill • Backfilled from existing medication fields
  • contraindications updated 2026-04-26 10:06 by etl_backfill • Backfilled from existing medication fields

FDA Products & Applications (Animal Drugs @ FDA)

Official sponsor/proprietary-name/application-status records linked by active ingredient.

Product Sponsor Application Status Published
Rumensin™ 90 Rumensin™ 113
OTC
Monensin
Type A Medicated Article Oral
Elanco US Inc. NADA 95735 Approved Mar 11, 2026
MoorMan's® Mintrate® Red Block RU MoorMan's® Mintrate® Blonde Block RU
OTC
Monensin
Type C free-choice medicated feed Oral
ADM Animal Nutrition NADA 115-581 Approved Nov 5, 2025
Coban™
OTC
Monensin
Medicated Feed Oral
Elanco US Inc. NADA 130-736 Approved Oct 22, 2025
Coxidin® 90
OTC
Monensin
Type A medicated articles to be used in the manufacture of Type C medicated feeds Oral, in feed
Huvepharma EOOD ANADA 200-783 Approved Sep 3, 2024
Monovet® 90
OTC
Monensin
Type A medicated articles for use in the manufacture of Type B and Type C medicated feeds Oral
Huvepharma EOOD ANADA 200-639 Approved Apr 22, 2021

Data source: FDA Animal Drugs @ FDA (public search export).

What It's For (FDA Label Highlights)

Extracted from FDA Animal Drugs @ FDA product labeling. Always confirm details with your veterinarian.

Species: Maintained in confinement except reproducing or lactating goats • Beef cows • Calves, excluding veal calves • Dairy cows • Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot • Growing beef steers and heifers fed in confinement for slaughter • Replacement beef and dairy heifers
Composition / specifications
Monensin™ 90: Monensin USP, 90.7 g per pound
Growing beef steers and heifers fed in confinement for slaughter
Indication
For improved feed efficiency.
Dosage

Feed continuously in a complete feed 5 to 40 g/ton monensin on a 90% dry matter basis to provide 50 to 480 mg monensin per head per day. No additional improvement in feed efficiency has been shown from feeding monensin at levels greater than 30 g/ton (360 mg monensin per head per day).

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Indication
For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.
Dosage

Feed continuously 10 to 40 g/ton to provide 0.14 to 0.42 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 480 mg of monensin per head per day.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Beef Cows
Indication
For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.
Dosage

Feed at a rate of 0.14 to 0.42 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 200 mg per head per day. During the first 5 days, pastured cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Indication
For improved feed efficiency when receiving supplemental feed.
Dosage

Feed continuously at 50 to 200 mg per head per day. Blend into a minimum of 1 pound of Type C medicated feed and either hand feed or mix into the total ration. Feed (other than the Type C medicated feed containing Rumensin) can be restricted to 95% (of normal requirements) when 50 mg of monensin activity is fed, and to 90% at 200 mg. Cows on pasture or in dry lot must receive a minimum of 1 pound of Type C medicated feed per head per day. Additionally, a minimum of 16 pounds (air-dry basis) of roughage such as silage, haylage, ammoniated straw, hay or equivalent feedstuffs should be fed in order to meet NRC recommendations for beef cows to gain 0.25 to 0.75 pounds per head per day. Standing, dried winter range forage may not be of adequate quality to result in improved e¬fficiency when supplemented with Rumensin. During the first 5 days, pastured cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed. Do not self feed.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Goats maintained in confinement except reproducing or lactating goats
Indication

For the prevention of coccidiosis caused by Eimeria crandallis, Eimeria christenseni, and Eimeria ninakohlyakimovae.

Dosage

20 grams per ton of complete feed continuously as the sole ration.

Limitations

Feed only to goats maintained in confinement. Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot and Replacement beef and dairy heifers
Indication
For increased rate of weight gain.
Dosage

Feed this supplemental Type C medicated feed containing 15 to 400 g monensin per ton. 

During the first 5 days, cattle should receive 50 to 100 mg monensin per head per day in a minimum of 1 pound of Type C medicated feed. After 5 days, feed at a rate of 50 to 200 mg monensin per head per day in a minimum of 1 pound of Type C medicated feed OR at a rate of 400 mg monensin per head per day every other day in a minimum of 2 pounds of Type C medicated feed.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Indication

For coccidiosis prevention and control

Dosage

Feed this supplemental Type C medicated feed containing 15 to 400 g monensin per ton to provide 0.14 to 0.42 mg monensin per pound of body weight per day, depending upon severity of challenge. During the first 5 days, cattle should receive a maximum of 100 mg monensin per head per day in a minimum of 1 pound of Type C medicated feed. After 5 days, feed up to a maximum of 200 mg monensin per head per day in a minimum of 1 pound of Type C medicated feed.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Type C free-choice medicated feeds 

All Type C free-choice medicated feeds containing Rumensin must be manufactured according to an FDA-approved formula/specification. When using a formula/specification published in the Code of Federal Regulations (CFR), a Medicated Feed Mill license is not required. Use of Rumensin in a proprietary formula/specification not published in the CFR requires prior FDA approval and a Medicated Feed Mill license.
Calves (excluding veal calves)
Indication
For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.
Dosage

10 to 200 grams per ton of feed to provide 0.14 to 1.00 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 200 mg of monensin per head per day.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing.

Dairy Cows
Indication
For increased milk production efficiency (production of marketable solids-corrected milk per unit of feed intake).
Dosage

Total Mixed Ration (complete feed): Feed continuously 11 to 22 g/ton monensin on a 100% dry matter basis.

Component Feeding Systems (including top dress): Feed continuously 11 to 400 g/ton monensin in a minimum of 1 pound Type C medicated feed per cow per day to provide 185 to 660 mg/head/day monensin to lactating cows or 115 to 410 mg/head/day monensin to dry cows.

Limitations

Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin by horses has been fatal. Monensin medicated cattle and goat feeds are safe for use in cattle and goats only. Consumption by unapproved species may result in toxic reactions. Feeding undiluted or mixing errors resulting in high concentrations of monensin has been fatal to cattle and could be fatal to goats. Must be thorougly mixed in feeds before use. Do not exceed the levels of monensin recommended in the feeding directions as reduced average daily gains may result. Do not feed to lactating goats. If feed refusals containing monensin are fed to other groups of cattle, the concentration of monensin in the refusals and amount of refusals fed should be taken into consideration to prevent monensin overdosing. You may notice reduced voluntary feed intake in dairy cows fed monensin. This reduction increases with higher doses of monensin fed. Rule out monensin as the cause of reduced feed intake before attributing to other causes such as illness, feed management, or the environment. You may notice reduced milk fat percentage in dairy cows fed monensin. This reduction increases with higher doses of monensin fed. You may notice increased incidence and treatment of cystic ovaries and metritis, reduced conception rates, increased services per animal, and extended days open and corresponding calving intervals in dairy cows fed monensin. Have a comprehensive and ongoing nutritional, reproductive and herd health program in place when feeding monensin to dairy cows.

FDA page: Open in Animal Drugs @ FDA

Species: Replacement beef heifers on pasture • Growing beef steers and heifers on pasture (stocker, feeder, and slaughter)
Composition / specifications
Monensin as the base or the sodium salt, contains a minimum of 90 percent monensin activity derived from monensin A and a minimum of 95 percent derived from monensin A plus B. Approvals for Type A medicated articles containing 60 and 80 grams per pound.
Cattle (growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and replacement beef heifers on pasture)
Indication

For increased rate of weight gain, and for prevention and control of coccidiosis caused by Eimeria bovis and E. zuernii in growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and replacement beef heifers on pasture which may require supplemental feed.

Dosage

MoorMan's® Mintrate® Blonde Block RU is for growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and replacement beef heifers on pasture when maintained on good quality pasture or roughage. If the pasture is in short supply or poor quality, Mintrate Red Block RU is recommended. Before feeding, be sure cattle are accustomed to protein blocks by feeding unmedicated Mintrate Blocks for 30 to 60 day or until cattle have demonstrate ed proper consumption. As soon as cattle have demonstrated proper consumption, remove the non-medicated blocks and replace with the amount of Mintrate Blonde Block RU. Feed this block free-choice. Do not allow animals access to other protein blocks, salt or mineral while being fed this product. Recommended consumption of block is 0.34 to 1.33 lb per head per day to provide 50 to 200 mg monensin per head per day. A 10-day supply of blocks may be put out at one time. Place blocks near water or loafing areas. Not less than one block for each 10 to 12 animals is recommended. Additional blocks should be put out when the current blocks are 75% consumed.

Limitations

FDA page: Open in Animal Drugs @ FDA

Species: Bobwhite Quail, Growing • Growing
Growing Bobwhite Quail
Indication
For the prevention of coccidiosis in growing bobwhite quail caused by Eimeria dispersa and E. Lettyae.
Dosage

Monensin, 73 grams per ton

Limitations
Do not feed undiluted. Must be thoroughly mixed in feeds before use. Feed continuously as the sole ration. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for replacement chickens intended to become broiler breeding chickens.
Growing Turkeys
Indication
For the prevention of coccidiosis in turkeys caused by E. adenoeides, E. meleagrimitis, and E. gallopavonis.
Dosage
Monensin, 54 to 90 grams per ton
Limitations
Do not feed undiluted. Must be thoroughly mixed in feeds before use. Feed continuously as the sole ration. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for replacement chickens intended to become broiler breeding chickens.

FDA page: Open in Animal Drugs @ FDA

Species: Bobwhite Quail, Growing • Growing • Broilers • Laying hen replacement chickens • Layer breeder replacement chickens
Broiler Chickens, Laying Hen Replacement Chickens, and Layer Breeder Replacement Chickens:
Indication

As an aid in the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E. acervulina, E. brunettiE. mivati, and E. maxima.

Dosage

Feed complete feed (90 to 110 g/ton) continuously as the sole ration.

Limitations
Growing Turkeys
Indication

For the prevention of coccidiosis in turkeys caused by Eimeria adenoeides, E. meleagrimitis and E. gallopavonis.

Dosage

Feed complete feed (54 to 90 g/ton) continuously as the sole ration. The optimum level depends upon the severity of coccidiosis exposure.

Limitations
Growing Bobwhite Quail
Indication

For the prevention of coccidiosis in growing Bobwhite quail caused by Eimeria dispersa and E. lettyae.

Dosage

Feed complete feed (73 g/ton) continuously as the sole ration.

Limitations

FDA page: Open in Animal Drugs @ FDA

Species: Maintained in confinement except reproducing or lactating goats • Beef cows • Calves, excluding veal calves • Dairy cows • Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot • Growing beef steers and heifers fed in confinement for slaughter • Replacement beef and dairy heifers
Composition / specifications
90.7 g/lb (200 g/kg)
Growing beef steers and heifers fed in confinement for slaughter
Indication

For improved feed efficiency.

Dosage

Feed complete feed (5 to 40 g/ton) continuously to growing finishing beef cattle to provide not less than 50 nor more than 480 mg monensin per head per day.

Limitations
Indication

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.

Dosage

Feed continuously (10 to 40 g/ton) to provide 0.14 to 0.42 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 480 mg of monensin per head per day.

Limitations
Dairy Cows
Indication

For increased milk production efficiency (production of marketable solids-corrected milk per unit of feed intake).

Dosage

Total Mixed Rations (“complete feed”): Feed continuously to dry and lactating dairy cows a total mixed ration ("complete feed") containing 11 to 22 g/ton monensin on a 100% dry matter basis.

Component Feeding Systems (including top dress): Feed continuously to dry and lactating dairy cows a Type C Medicated Feed containing 11 to 400 g/ton monensin. The Type C Medicated Feed must be fed in a minimum of 1 pound of feed per cow per day to provide 185 to 660 mg/head/day monensin to lactating cows or 115 to 410 mg/head/day monensin to dry cows.

Limitations
Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot and Replacement beef and dairy heifers
Indication

For increased rate of weight gain.

Dosage

Feed at the rate of not less than 50 nor more than 200 mg per head per day in not less than one pound of Type C Medicated Feed; or after the 5th day, feed at the rate of 400 mg per head per day every other day in not less than 2 pounds of Type C Medicated Feed. The monensin concentration in the Type C Medicated Feed must be between 15 and 400 grams per ton. During the first 5 days, cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed. Do not self feed.

Limitations

Free-Choice (Self-Fed) Medicated Feeds: All Free-choice medicated feeds must provide not less than 50 nor more than 200 mg monensin per head per day.

Indication

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.

Dosage

Feed at a rate to provide 0.14 to 0.42 mg per pound body weight per day, depending upon severity of challenge, up to a maximum of 200 mg per head per day. The monensin concentration in Type C Medicated Feed must be between 15 and 400 grams per ton. During the first 5 days, cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed.

Limitations

Free-Choice (Self-Fed) Medicated Feeds: All Free-choice medicated feeds must provide not less than 50 nor more than 200 mg monensin per head per day.

Beef cows
Indication

For improved feed efficiency when receiving supplemental feed.

Dosage

Feed continuously at a rate of 50 to 200 mg per head per day. Blend into a minimum of 1 pound of Type C Medicated Feed and either hand feed or mix into the total ration. Feed (other than the Type C Medicated Feed containing Monovet® 90) can be restricted to 95% (of normal requirements) when 50 mg of monensin activity is fed, and to 90% at 200 mg. Cows on pasture or in dry lot must receive a minimum of 1 pound of Type C Medicated Feed per head per day. Additionally, a minimum of 16 pounds (air-dry basis) of roughage such as silage, haylage, ammoniated straw, hay or equivalent feedstuffs should be fed in order to meet NRC recommendations for mature reproducing beef cows to gain 0.25 to 0.75 pounds per head per day. Standing, dried winter range forage may not be of adequate quality to result in improved efficiency when supplemented with Monovet® 90. During the first 5 days, pastured cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed. Do not self feed.

Limitations
Indication

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.

Dosage

Feed at a rate of 0.14 to 0.42 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 200 mg per head per day. During the first 5 days, pastured cattle should receive no more than 100 mg per day contained in not less than 1 pound of feed.

Limitations
Goats maintained in confinement except reproducing or lactating goats
Indication

For prevention of coccidiosis caused by Eimeria crandallis, Eimeria christenseni, and Eimeria ninakohlyakimovae.

Dosage

Feed complete feed (20 g/ton) continuously to goats as the sole ration. Feed only to goats maintained in confinement.

Limitations
Calves (excluding veal calves)
Indication

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii.

Dosage

Feed at a rate of 0.14 to 1.00 mg per pound of body weight per day, depending upon severity of challenge, up to a maximum of 200 mg of monensin per head per day. The monensin concentration in Type C Medicated Feed must be between 10 and 200 g/ton.

Limitations

FDA page: Open in Animal Drugs @ FDA

Usage

For improved feed efficiency; for improved pigmentation by enhancing carotenoid and xanthophyll utilization; for the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E. acervulina, E. maxima, E. brunetti, and E. mivati. For the prevention of coccidiosis in turkeys caused by Eimeria adenoeides , E.meleagrimitis and E. gallopavonis . To aid in the prevention of coccidiosis caused by Eimeria necatrix , E. tenella , E. acervulina , E. brunetti , E. mivati , and E. maxima .

Source: FDA Animal Drugs @ FDA • Reference

Contraindications

Do not feed to laying chickens;. Feed continuously as the sole ration. Withdraw 5 days before slaughter. As sole source of organic arsenic. Feed must be used within 4 weeks of manufacture. As monensin sodium. Do not allow horses or other equines access to formulations containing monensin. Ingestion of monensin by equines has been fatal. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Not for replacement chickens intended to become broiler breeding chickens. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. In the absence of coccidiosis in broiler chickens the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for replacement chickens intended to become broiler breeding chickens.

Top Reported Reactions (openFDA)

De-duplicated reaction terms grouped by body system from FDA openFDA reports (not verified; does not prove causation).

Digestive
Drooling (1) • Dog

Showing top 5 for Digestive.

Neurologic
Seizure NOS (1) • Dog

Showing top 5 for Neurologic.

Other
Respiratory arrest (1) • Dog Recumbency (1) • Dog Hypothermia (1) • Dog Death (1) • Dog Circulatory shock (1) • Dog

Showing top 5 for Other.

Data source: FDA openFDA Animal & Veterinary adverse event reports.

Adverse Event Case Summaries (openFDA)

These are individual FDA adverse event reports. They are unverified and do not prove the medication caused the reaction.

No case-level openFDA reports are linked for this medication yet.

Data source: FDA openFDA Animal & Veterinary adverse event reports.

Overdose Information

No approved overdose-management text is linked yet. If overdose is suspected, contact a veterinarian or emergency clinic immediately.

Storage & Handling

No approved storage guidance is linked yet for this ingredient. Use manufacturer packaging and veterinary guidance for handling/storage.

Share Your Thoughts

Let others know your experience or advice regarding this medication.

This medication has not been reviewed by a veterinarian yet.