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Roxee Medication Guide

Lotilaner

Medication reference facts with explicit FDA-approval, off-label, source-limited, and safety context. Roxee does not sell, prescribe, or dispense medications.

Both Reference complete FDA data linked Rx required Chewable Tablets Elanco US Inc. Official label facts Owner quick guide first

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Data freshness

Reference facts
Reference refreshed
Jun 22, 2026, 10:41 a.m.

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

FDA applications
FDA application data refreshed
Jun 22, 2026, 10:41 a.m.

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

Safety reports
Safety data refreshed
Jun 22, 2026, 10:42 a.m.

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

Source timing details
Source timing details
  • Reference facts: Source Roxee | Refreshed Jun 22, 2026, 10:41 AM UTC
    The reference fact projection used for browse cards and quick facts.
  • Animal Drugs @ FDA: Source FDA | Refreshed Jun 22, 2026, 10:40 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.
  • Animal Drug Product Listing Directory (NDC): Source FDA | Refreshed Jun 22, 2026, 10:41 AM UTC
    Package/product NDCs from FDA’s electronic listing directory (XLS).
  • openFDA reaction terms: Source FDA openFDA | Refreshed Jun 22, 2026, 10:45 AM UTC
  • openFDA case summaries: Source FDA openFDA | Refreshed Jun 22, 2026, 10:45 AM UTC
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Lotilaner

Lotilaner

Drug type: Generic ingredient • Branded profile FDA branded products available

Both Chewable Tablets Rx required 100% reference complete

Species: Both

Manufacturer: Elanco US Inc.

Medication Snapshot

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

Lotilaner

For the treatment of infestations caused by New World screwworm ( Cochliomyia hominivorax ) larvae (myiasis) in dogs and puppies. For the treatment of infestations caused by New World screwworm ( Cochliomyia hominivorax ) larvae (myiasis) in cats and kittens. Credelio™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis ) and the treatment and control of tick infestations [ Amblyomma americanum (lone star tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (longhorned tick)] for one month in dogs and puppies 8 weeks of age and older, and weighing 4.4 pounds or greater. Credelio™ is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks. Species commonly shown: Both, Dog, Cat.

Generic name
Lotilaner
Brand names
Credelio™, Credelio™ CAT, Credelio
Manufacturer
Elanco US Inc.
Species
Both, Dog, Cat
Dosage forms
Chewable Tablets
Prescription
Prescription required
Completeness
100%
Validation
Complete
Brand names
Credelio™ Credelio™ CAT Credelio
Dosage forms
Chewable Tablets

Indications / Uses

For the treatment of infestations caused by New World screwworm ( Cochliomyia hominivorax ) larvae (myiasis) in dogs and puppies. For the treatment of infestations caused by New World screwworm ( Cochliomyia hominivorax ) larvae (myiasis) in cats and kittens. Credelio™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis ) and the treatment and control of tick infestations [ Amblyomma americanum (lone star tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (longhorned tick)] for one month in dogs and puppies 8 weeks of age and older, and weighing 4.4 pounds or greater. Credelio™ is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks.

Side Effects

Top reported reactions (openFDA): Vomiting, Diarrhoea, Lack of efficacy (ectoparasite) - tick NOS, Other abnormal test result NOS, Lethargy (see also Central nervous system depression in 'Neurological'), Seizure NOS.

FAQ

Both, Dog, Cat

Yes. Roxee shows this as prescription-only.

Chewable Tablets

Source Transparency

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Pet Owner Quick Guide

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

Used for:

For the treatment of infestations caused by New World screwworm ( Cochliomyia hominivorax ) larvae (myiasis) in dogs and puppies.

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:

  • Vomiting (1 reports)
  • Hyperglycaemia (1 reports)
  • Hiding (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?

Next actions

Research brief

Medication Research Insights

A source-aware map of what to know, what is uncertain, and what to verify with your veterinarian.

Source Backed Signals

What to know

Evidence-backed context Limited

Roxee has limited cited overview evidence for Lotilaner; use the official documents and your veterinarian's instructions for product-specific decisions.

Source: openFDA case USA-USFDACVM-2025-US-074690
Safety signal coverage Reported signals

32 tracked reaction signals; 32 reported cases; 20 serious reports; 2 species groups. These are reporting and label-derived signals for interpretation with a veterinarian.

Source: openFDA case USA-USFDACVM-2025-US-074690
Interpretation guardrail Not causation

Adverse-event reports help form a watch list, but they do not prove the medication caused the reaction and they are not a risk ranking between medications.

Evidence tension

Stronger signal Label / review

Official labels, package inserts, and reviewed summaries carry more weight than isolated reports.

Source: openFDA case USA-USFDACVM-2025-US-074690
Weaker signal Reported data

Case reports and openFDA terms are useful for pattern awareness, but they are incomplete, can include multiple exposures, and do not estimate an individual pet's probability of harm.

Reaction signal map

Most reported reactions Top terms

Vomiting (1 reports), Hyperglycaemia (1 reports), Hiding (1 reports), Haematuria (1 reports), Gastric distension (1 reports)

Body systems represented Signal grouping

Digestive (4), Skin & allergy (2), Behavior (2), Other (24)

Explore supporting adverse reports

Species and breed lens

Species represented in reports Species lens

Cat (16 reports), Dog (16 reports)

Breed metadata in reports Metadata only

Domestic Shorthair (2), Domestic Longhair (1), ['Spaniel - Cocker American', 'Poodle (unspecified)'] (1), Weimaraner (1). These are report metadata, not proof that a breed is at higher risk.

What your vet may verify

Fit for this patient Vet check

Verify whether Lotilaner fits the pet's species, current diagnosis, age, weight, organ status, pregnancy/lactation status, and concurrent medications.

Evidence limitations Evidence review

Separate label-backed warnings from adverse-event reports and owner observations before changing the plan.

What to watch next

Watch list Owner-safe

Vomiting, Hyperglycaemia, Hiding

Call sooner if Escalation

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

Bottom line: Use this Lotilaner brief as a structured watch list and source map, not as a reason to start, stop, or change treatment without your veterinarian.
Vet source depth
  1. openFDA case USA-USFDACVM-2025-US-074690 · adverse_reaction · adverse reactions
  2. FDA application profile · official_label · quick facts
  3. FDA application profile · official_label · quick facts
  4. Medication usage source · fda_animal_drugs · quick facts
  5. FOI · document · documents
  6. SPL · document · documents
  7. FOI · document · documents
  8. SPL · document · documents

Evidence

Review status / Updated / Sources

Review status: Clinical reviewer not listed

Updated: February 12, 2026, 10:44 PM UTC

Sources:
Safety & side effects

Side effects to monitor:

  • Vomiting
  • Hyperglycaemia
  • Hiding

Most reported reactions:

  • Vomiting (1 reports)
  • Hyperglycaemia (1 reports)
  • Hiding (1 reports)
Explore reported case details

Emergency warning signs:

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

Vet Fast Scan

Source-backed clinical checkpoints for quick review.

FDA-labeled species
Cat, Dog
Indication / use
For the treatment of infestations caused by New World screwworm ( Cochliomyia hominivorax ) larvae (myiasis) in dogs and puppies.
Form / route / dose
Form: Chewable Tablets
Route: Oral
Confirm product label and patient-specific plan.
Warnings
No structured warnings linked yet.
Adverse-event caveat
openFDA adverse-event cases are reported signals. They are not verified, do not prove causation, and do not estimate a pet's individual risk.
Source docs

Quick Facts

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

Species: Both
Manufacturer: Elanco US Inc.
Form: Chewable Tablets
Identifiers:
NADA: 141494 NADA: 141528 NADA: 141581 NADA: 141619 NADA: 6662 NADA: 6664 NDC Package: 58198-5451-1 NDC Package: 58198-5451-2 NDC Package: 58198-5451-3 NDC Package: 58198-5451-4 NDC Package: 58198-5451-6 NDC Package: 58198-5451-7 NDC Package: 58198-5452-1 NDC Package: 58198-5452-2 NDC Package: 58198-5452-3 NDC Package: 58198-5452-4 NDC Package: 58198-5452-5 NDC Package: 58198-5452-6 NDC Package: 58198-5452-7 NDC Package: 58198-5454-1
Source metadata:

Adverse Reactions

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

Reported case explorer

Filter stored openFDA reports by pet and report attributes. Counts describe reports in this data set, not risk.

Clear filters
openFDA adverse-event cases are reported signals. They are not verified, do not prove causation, and do not estimate a pet's individual risk.
Stored reports
24
Matching reports
3
Active filters
1
Selected filters
Reaction: Diarrhoea Clear
Reset
Showing up to 50 matching reports.

USA-USFDACVM-2025-US-074909

Received 2025-12-22 · MSK · MSK

Non-serious
Species
Dog
Breed
Dachshund - Miniature
Size / weight
10-24 lb (5.89 Kilogram)
Age
1-3 years (3 Year)
Sex
Male Neutered
Region
USA
Reactions
DiarrhoeaVomitingUnwell
Body systems
DigestiveOther
Outcomes
Recovered/Normal

USA-USFDACVM-2025-US-072755

Received 2025-12-10 · MSK · MSK

Serious
Species
Cat
Breed
Domestic Mediumhair
Size / weight
10-24 lb (4.627 Kilogram)
Age
1-3 years (2 Year)
Sex
Female Unknown
Region
USA
Reactions
EmesisNot eatingHidingHyperglycaemiaFeverTachycardiaTachypnoeaBloody stoolWeight lossGall bladder & bile duct disorder NOSGastric distensionIntestinal thickeningDiarrhoea
Body systems
DigestiveOther
Outcomes
Ongoing

USA-USFDACVM-2025-US-071202

Received 2025-12-02 · MSK · MSK

Non-serious
Species
Dog
Breed
Catahoula Leopard Dog
Size / weight
50-99 lb (28.803 Kilogram)
Age
4-7 years (6 Year)
Sex
Female Neutered
Region
USA
Reactions
Pica NOSDiarrhoeaBloody stoolWeight loss
Body systems
OtherDigestive
Outcomes
Ongoing

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

Tracked signals
32
Reported cases
32
Serious reports
20
Species represented
2
Grouped by Body System
Digestive (4) · Vomiting, Diarrhea, Decreased appetite Skin & allergy (2) · Hair loss, Face and neck swelling Behavior (2) · Biting -aggression, Behavioral disorder (unspecified) Other (24) · Hyperglycaemia, Hiding, Haematuria
Most Reported Reactions
Reaction Body system Cases Species Serious cases
Digestive 1 Cat 1
Other 1 Cat 1
Other 1 Cat 1
Other 1 Cat 1
Other 1 Cat 1
Other 1 Cat 1
Other 1 Dog 1
Other 1 Dog 1

Species coverage: Cat (16) Dog (16)

View detailed reaction table
Reaction Body system Species Seriousness Frequency Reports
Digestive Cat Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Skin & allergy Dog Non-serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Other Dog Serious - 1
Other Dog Serious - 1
Skin & allergy Dog Serious - 1
Other Cat Serious - 1
Other Dog Non-serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Digestive Cat Serious - 1
Digestive Dog Non-serious - 1
Other Cat Serious - 1
Other Dog Non-serious - 1
Other Dog Non-serious - 1
Other Dog Non-serious - 1
Other Dog Serious - 1
Other Dog Non-serious - 1
Other Dog Non-serious - 1
Digestive Dog Non-serious - 1
Behavior Dog Serious - 1
Other Cat Serious - 1
Behavior Dog Non-serious - 1
Other Dog Non-serious - 1
Other Cat Non-serious - 1
Other Cat Serious - 1
Source metadata:

Source Documents

The most useful source links appear first; full previews and metadata stay in the veterinary/professional layer.

Use original documents to confirm product-specific warnings, ingredients, and handling details with your veterinarian.

Full source previews and metadata remain in the veterinary/professional layer.

Owner handouts

0
No owner handouts linked yet.

Official label / PI

0
No official label or package insert links yet.

SPL

9

FOI

11

Credelio™

SPL · SPL

FDA Structured Product Label

Credelio™

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.
E
6662
Status
RX
Form
Chewable Tablets
Route
Oral
Composition / specifications
Each chewable tablet contains 56.25 mg, 112.5 mg, 225 mg, 450 mg, or 900 mg lotilaner

Dogs

Indication

For the treatment of infestations caused by New World screwworm (Cochliomyia hominivorax) larvae (myiasis) in dogs and puppies.

Dosage

Administer orally at the minimum dosage of 9 mg/lb (20 mg/kg) with food.

Credelio™ CAT

SPL · SPL

FDA Structured Product Label

Credelio™ CAT

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.
E
6664
Status
RX
Form
Chewable Tablets
Route
Oral
Composition / specifications
Each chewable tablet contains 12 mg or 48 mg lotilaner

Cats

Indication

For the treatment of infestations caused by New World screwworm (Cochliomyia hominivorax) larvae (myiasis) in cats and kittens.

Dosage

Administer orally at the minimum dosage of 2.7 mg/lb (6 mg/kg) with food.

Credelio™

SPL · SPL

FDA Structured Product Label

Credelio™

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
141-494
Status
RX
Form
Chewable Tablets
Route
Oral
Species
Dog
Composition / specifications
Each chewable tablet contains 56.25 mg, 112.5 mg, 225 mg, 450 mg, or 900 mg lotilaner.

Dogs

Indication

Credelio™ kills adult fleas and is indicated for the treatment and prevention of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations [Amblyomma americanum (lone star tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (longhorned tick)] for one month in dogs and puppies 8 weeks of age and older, and weighing 4.4 pounds or greater. Credelio™ is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks.

Dosage

Credelio™ chewable tablets are given orally once a month at the recommended minimum dosage of 9 mg/lb (20 mg/kg). Credelio™ must be administered with food.

Credelio™ CAT

SPL · SPL

FDA Structured Product Label

Credelio™ CAT

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
141-528
Status
RX
Form
Chewable Tablets
Route
Oral
Species
Cat
Composition / specifications
Each chewable tablet contains 12 mg or 48 mg lotilaner.

Cats

Indication

Kills adult fleas, and is indicated for the treatment and prevention of flea infestations (Ctenocephalides felis) for one month in cats and kittens 8 weeks of age and older and weighing 2.0 pounds or greater. It also indicated for the treatment and control of Ixodes scapularis (black-legged tick) infestations for one month in cats and kittens 6 months of age and older, and weighing 2.0 pounds or greater.

Dosage

Administer orally once a month at the minimum dosage of 2.7 mg/lb (6 mg/kg). Must be administered with food.

Credelio SPL

SPL · Structured Product Label

FDA Structured Product Label XML for Credelio. Use the source link for the full official labeling record.

Credelio SPL

SPL · Structured Product Label

FDA Structured Product Label XML for Credelio. Use the source link for the full official labeling record.

Credelio SPL

SPL · Structured Product Label

FDA Structured Product Label XML for Credelio. Use the source link for the full official labeling record.

Credelio SPL

SPL · Structured Product Label

FDA Structured Product Label XML for Credelio. Use the source link for the full official labeling record.

Credelio SPL

SPL · Structured Product Label

FDA Structured Product Label XML for Credelio. Use the source link for the full official labeling record.

FOI Summary oV 006-662 Authorized October 24, 2025.pdf

FOI · FOI

FOI oV 006-664 Authorized November 21, 2025.pdf

FOI · FOI

FOI Summary sN 141-494 Approved October 24, 2025.pdf

FOI · FOI

FOI Summary sN 141-494 Approved September 3, 2019.pdf

FOI · FOI

FOI Summary oN 141-494 Approved January 19, 2017.pdf

FOI · FOI

FOI Summary sN 141-528 Approved April 12, 2021.pdf

FOI · FOI

FOI Summary oN 141-528 Approved December 9, 2019.pdf

FOI · FOI

FOI Summary oN 141-581 Approved October 7, 2024.pdf

FOI · FOI summary

FOI Summary sN 141-581 Approved May 21, 2025.pdf

FOI · FOI summary

FOI Summary sN 141-581 Approved October 20, 2025.pdf

FOI · FOI summary

FOI Summary o 141-619 Approved December 17, 2025 (2).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
  • Reference facts: Source Roxee | Refreshed Jun 22, 2026, 10:41 AM UTC
    The reference fact projection used for browse cards and quick facts.
  • Animal Drugs @ FDA: Source FDA | Refreshed Jun 22, 2026, 10:40 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.
  • Animal Drug Product Listing Directory (NDC): Source FDA | Refreshed Jun 22, 2026, 10:41 AM UTC
    Package/product NDCs from FDA’s electronic listing directory (XLS).
  • openFDA reaction terms: Source FDA openFDA | Refreshed Jun 22, 2026, 10:45 AM UTC
  • openFDA case summaries: Source FDA openFDA | Refreshed Jun 22, 2026, 10:45 AM UTC
Official (FDA)
Identity: Generic ingredient • FDA branded products available
Official FDA brands: Credelio
Manufacturer mapping: Elanco US Inc.
Case-reported brands (openFDA): MSK
Catalog species: Both FDA-labeled species: Cat, Dog
Rx/OTC: RX
Form/route: Chewable Tablets Oral
Applications: E 6662 • E 6664 • NADA 141-494 • NADA 141-528
NDC: Packages 58198-5451-1 58198-5451-2 58198-5451-3 58198-5451-4 58198-5451-6 58198-5451-7 Products 58198
Documents: 7 (FOI: 7) • SPL: 4 Label highlights Official documents
Safety (openFDA)
Top reactions: Dog 44 Cat 45 View
Case summaries: 24 (showing 8) View
openFDA reports are unverified and do not prove causation.

Explore
Linked using: Fda_Label (0.95), Fda_Label (0.95), Fda_Label (0.95)

Diagnosis Codes
ICD10_CM: B74.8 ICD10_CM: B88.1
Other filariases

Counseling and Monitoring Highlights

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

Top reaction signals
Vomiting (1) Hyperglycaemia (1) Hiding (1) Haematuria (1) Gastric distension (1) Gall bladder & bile duct disorder NOS (1) Fracture (1) Fever (1)

Identifiers & Packages

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

Identifiers
NADA: 141494 NADA: 141528 NADA: 141581 NADA: 141619 NADA: 6662 NADA: 6664 NDC Package: 58198-5451-1 NDC Package: 58198-5451-2 NDC Package: 58198-5451-3 NDC Package: 58198-5451-4 NDC Package: 58198-5451-6 NDC Package: 58198-5451-7 NDC Package: 58198-5452-1 NDC Package: 58198-5452-2 NDC Package: 58198-5452-3 NDC Package: 58198-5452-4 NDC Package: 58198-5452-5 NDC Package: 58198-5452-6 NDC Package: 58198-5452-7 NDC Package: 58198-5454-1 NDC Package: 58198-5454-2 NDC Package: 58198-5454-3 NDC Package: 58198-5454-4 NDC Package: 58198-5454-6
Package NDC Product NDC Form / Route Status
58198-5451-1 58198 -
58198-5451-2 58198 -
58198-5451-3 58198 -
58198-5451-4 58198 -
58198-5451-6 58198 -
58198-5451-7 58198 -
58198-5452-1 58198 -
58198-5452-2 58198 -
58198-5452-3 58198 -
58198-5452-4 58198 -
58198-5452-5 58198 -
58198-5452-6 58198 -
58198-5452-7 58198 -
58198-5454-1 58198 -
58198-5454-2 58198 -
58198-5454-3 58198 -
58198-5454-4 58198 -
58198-5454-6 58198 -
58198-5454-7 58198 -
58198-5456-1 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 135 Clinical 1 Manufacturer 0 Marketing 0
Current Field Facts
  • side_effects: Top reported reactions (openFDA): Vomiting, Diarrhoea, Lack of efficacy (ectoparasite) - tick NOS, Other abnormal test result NOS, Lethargy (see also Central n… (Clinical, 2026-04-11)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-22)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-22)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-21)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-20)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-13)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-12)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-12)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-11)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-11)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-10)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-09)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-08)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-07)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-06)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-05)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-04)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-03)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-02)
  • indications: Credelio™ kills adult fleas and is indicated for the treatment of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations … (Official, 2026-06-01)
Recent Revisions
  • side_effects updated 2026-04-12 10:05 by etl_backfill • Backfilled from existing medication fields
  • usage updated 2026-04-12 10:05 by etl_backfill • Backfilled from existing medication fields
  • side_effects updated 2026-04-11 10:05 by etl_backfill • Backfilled from existing medication fields
  • usage updated 2026-04-11 10:05 by etl_backfill • Backfilled from existing medication fields
  • side_effects updated 2026-02-12 22:44 by etl_backfill • Backfilled from existing medication fields
  • usage updated 2026-02-12 22:44 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
Credelio™
RX
Lotilaner
Chewable Tablets Oral
Elanco US Inc. E 6662 G Jan 26, 2026
Credelio™ CAT
RX
Lotilaner
Chewable Tablets Oral
Elanco US Inc. E 6664 G Jan 26, 2026
Credelio™
RX
Lotilaner
Chewable Tablets Oral
Elanco US Inc. NADA 141-494 Approved Nov 3, 2025
Credelio™ CAT
RX
Lotilaner
Chewable Tablets Oral
Elanco US Inc. NADA 141-528 Approved May 3, 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.

Composition / specifications
Each chewable tablet contains 56.25 mg, 112.5 mg, 225 mg, 450 mg, or 900 mg lotilaner
Dogs
Indication

For the treatment of infestations caused by New World screwworm (Cochliomyia hominivorax) larvae (myiasis) in dogs and puppies.

Dosage

Administer orally at the minimum dosage of 9 mg/lb (20 mg/kg) with food.

Limitations

FDA page: Open in Animal Drugs @ FDA

Composition / specifications
Each chewable tablet contains 12 mg or 48 mg lotilaner
Cats
Indication

For the treatment of infestations caused by New World screwworm (Cochliomyia hominivorax) larvae (myiasis) in cats and kittens.

Dosage

Administer orally at the minimum dosage of 2.7 mg/lb (6 mg/kg) with food.

Limitations

FDA page: Open in Animal Drugs @ FDA

Species: Dog
Composition / specifications
Each chewable tablet contains 56.25 mg, 112.5 mg, 225 mg, 450 mg, or 900 mg lotilaner.
Dogs
Indication

Credelio™ kills adult fleas and is indicated for the treatment and prevention of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations [Amblyomma americanum (lone star tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (longhorned tick)] for one month in dogs and puppies 8 weeks of age and older, and weighing 4.4 pounds or greater. Credelio™ is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks.

Dosage

Credelio™ chewable tablets are given orally once a month at the recommended minimum dosage of 9 mg/lb (20 mg/kg). Credelio™ must be administered with food.

Limitations

FDA page: Open in Animal Drugs @ FDA

Species: Cat
Composition / specifications
Each chewable tablet contains 12 mg or 48 mg lotilaner.
Cats
Indication

Kills adult fleas, and is indicated for the treatment and prevention of flea infestations (Ctenocephalides felis) for one month in cats and kittens 8 weeks of age and older and weighing 2.0 pounds or greater. It also indicated for the treatment and control of Ixodes scapularis (black-legged tick) infestations for one month in cats and kittens 6 months of age and older, and weighing 2.0 pounds or greater.

Dosage

Administer orally once a month at the minimum dosage of 2.7 mg/lb (6 mg/kg). Must be administered with food.

Limitations

FDA page: Open in Animal Drugs @ FDA

Usage

For the treatment of infestations caused by New World screwworm ( Cochliomyia hominivorax ) larvae (myiasis) in dogs and puppies. For the treatment of infestations caused by New World screwworm ( Cochliomyia hominivorax ) larvae (myiasis) in cats and kittens. Credelio™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis ) and the treatment and control of tick infestations [ Amblyomma americanum (lone star tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (longhorned tick)] for one month in dogs and puppies 8 weeks of age and older, and weighing 4.4 pounds or greater. Credelio™ is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks.

Source: FDA Animal Drugs @ FDA • Reference

Top Reported Reactions (openFDA)

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

Digestive
Vomiting (1) • Cat Diarrhea (1) • Cat Decreased appetite (1) • Dog Bloody diarrhoea (1) • Dog

Showing top 5 for Digestive.

Skin & allergy
Hair loss (1) • Dog Face and neck swelling (1) • Dog

Showing top 5 for Skin & allergy.

Behavior
Biting -aggression (1) • Dog Behavioral disorder (1) • Dog

Showing top 5 for Behavior.

Other
Hyperglycaemia (1) • Cat Hiding (1) • Cat Haematuria (1) • Cat Gastric distension (1) • Cat Gall bladder & bile duct disorder NOS (1) • Cat
Show more (19)
Fracture (1) • Dog Fever (1) • Dog Exudative skin condition (1) • Cat Erythema (1) • Dog Elevated creatinine (1) • Cat Elevated blood urea nitrogen (1) • Cat Distress (1) • Cat Distension of abdomen (1) • Cat Death (1) • Cat Cyst NOS (1) • Dog Cyanotic spots/blotchy skin (1) • Dog Cough (1) • Dog Conjunctivitis (1) • Dog Bumps on skin (1) • Dog Bloody stool (1) • Dog Bilirubinuria (1) • Cat Bacterial skin infection NOS (1) • Dog Agitation (1) • Cat Abnormal radiograph finding (1) • Cat

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.

Cat, Domestic Longhair, Male, 2 year, 5.44 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 1 tablet per animal • Reactions: Scratching, Behavioral disorder (unspecified), Shivering, Trembling, Neurological disorder NOS • Outcome: Recovered/Normal

  • Report ID: USA-USFDACVM-2025-US-075230
  • Serious AE: No
  • Treated For AE: No
  • Sex: Male
  • Age: 2.00 Year
  • Weight: 5.440 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 1 tablet per animal
Reactions Reported:
Scratching Behavioral disorder (unspecified) Shivering Trembling Neurological disorder NOS
Outcomes: Recovered/Normal

Dog, ['Spaniel - Cocker American', 'Poodle (unspecified)'], Male, 7.3 year, 9.29 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 1 tablet per animal, Frequency: 1 per month • Reactions: Lack of efficacy (endoparasite) - roundworm NOS • Outcome: Outcome Unknown

  • Report ID: USA-USFDACVM-2025-US-075045
  • Serious AE: No
  • Treated For AE: Yes
  • Sex: Male
  • Age: 7.30 Year
  • Weight: 9.290 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 1 tablet per animal
  • Frequency: 1 per month
Reactions Reported:
Lack of efficacy (endoparasite) - roundworm NOS
Outcomes: Outcome Unknown

Dog, Weimaraner, Female, 7 year, 52.2 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 1 tablet per animal, Frequency: 1 per month • Reactions: Lack of efficacy (bacteria) - Anaplasma, Other abnormal test result NOS • Outcome: Outcome Unknown

  • Report ID: USA-USFDACVM-2025-US-075232
  • Serious AE: No
  • Treated For AE: No
  • Sex: Female
  • Age: 7.00 Year
  • Weight: 52.200 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 1 tablet per animal
  • Frequency: 1 per month
Reactions Reported:
Lack of efficacy (bacteria) - Anaplasma Other abnormal test result NOS
Outcomes: Outcome Unknown

Cat, Domestic Shorthair, Male, 24 week, 4.71 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 1 tablet per animal • Reactions: Lack of efficacy (endoparasite) - tapeworm, Nasal discharge, Lack of efficacy (ectoparasite) - flea • Outcome: Outcome Unknown

  • Report ID: USA-USFDACVM-2025-US-075058
  • Serious AE: No
  • Treated For AE: No
  • Sex: Male
  • Age: 24.00 Week
  • Weight: 4.710 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 1 tablet per animal
Reactions Reported:
Lack of efficacy (endoparasite) - tapeworm Nasal discharge Lack of efficacy (ectoparasite) - flea
Outcomes: Outcome Unknown

Dog, Dachshund - Miniature, Male, 3 year, 5.89 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 1 tablet per animal • Reactions: Diarrhea, Vomiting, Unwell • Outcome: Recovered/Normal

  • Report ID: USA-USFDACVM-2025-US-074909
  • Serious AE: No
  • Treated For AE: No
  • Sex: Male
  • Age: 3.00 Year
  • Weight: 5.890 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 1 tablet per animal
Reactions Reported:
Diarrhea Vomiting Unwell
Outcomes: Recovered/Normal

Dog, Shepherd Dog - Australian, Female, 2 year, 19.95 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 1 tablet per animal • Reactions: Vomiting • Outcome: Recovered/Normal

  • Report ID: USA-USFDACVM-2025-US-074902
  • Serious AE: No
  • Treated For AE: No
  • Sex: Female
  • Age: 2.00 Year
  • Weight: 19.950 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 1 tablet per animal
Reactions Reported:
Vomiting
Outcomes: Recovered/Normal

Dog, Black Mouth Cur, Male, 2 year, 28 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 1 dose per animal • Reactions: Lack of efficacy (endoparasite) - hookworm, Lack of efficacy (endoparasite) - roundworm NOS, Other abnormal test result NOS • Outcome: Outcome Unknown

  • Report ID: USA-USFDACVM-2025-US-075052
  • Serious AE: No
  • Treated For AE: Yes
  • Sex: Male
  • Age: 2.00 Year
  • Weight: 28.000 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 1 dose per animal
Reactions Reported:
Lack of efficacy (endoparasite) - hookworm Lack of efficacy (endoparasite) - roundworm NOS Other abnormal test result NOS
Outcomes: Outcome Unknown

Cat, Domestic Shorthair, Female, 15 year, 4.53 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 1 tablet per animal, Frequency: 1 per day • Reactions: Tiredness (lethargy) • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2025-US-074777
  • Serious AE: No
  • Treated For AE: No
  • Sex: Female
  • Age: 15.00 Year
  • Weight: 4.530 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 1 tablet per animal
  • Frequency: 1 per day
Reactions Reported:
Tiredness (lethargy)
Outcomes: Ongoing

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.

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