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Roxee Medication Guide

Sarolaner

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 Zoetis Inc. Official label facts Owner quick guide first

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Data freshness

Reference facts
Reference refreshed
Aug 6, 2026, 7:47 p.m.

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

FDA applications
FDA application data refreshed
Aug 6, 2026, 7:47 p.m.

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

Safety reports
Safety data refreshed
Aug 6, 2026, 7:49 p.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 Aug 6, 2026, 7:47 PM UTC
    The reference fact projection used for browse cards and quick facts.
  • Animal Drugs @ FDA: Source FDA | Refreshed Aug 6, 2026, 7:46 PM 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 Aug 6, 2026, 7:47 PM UTC
    Package/product NDCs from FDA’s electronic listing directory (XLS).
  • openFDA reaction terms: Source FDA openFDA | Refreshed Aug 6, 2026, 7:52 PM UTC
  • openFDA case summaries: Source FDA openFDA | Refreshed Aug 6, 2026, 7:52 PM UTC
Illustration placeholder
Sarolaner

Sarolaner

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

Both Chewable Tablets Rx required 100% reference complete

Species: Both

Manufacturer: Zoetis Inc.

Medication Snapshot

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

Sarolaner

SIMPARICA® 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), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (Asian longhorned tick)] for one month in dogs 6 months of age or older and weighing 2.8 pounds or greater. SIMPARICA® is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks. revolution® PLUS is indicated for the prevention of heartworm disease caused by Dirofilaria immitis, the treatment and control of roundworm ( Toxocara cati ) and intestinal hookworm ( Ancylostoma tubaeforme ) infections, and the treatment and control of ear mite ( Otodectes cynotis ) infestations. revolution® PLUS kills adult fleas ( Ctenocephalides felis ) and is indicated for the treatment and prevention of flea infestations, the prevention of Dipylidium caninum (tapeworm) infections as a direct result of killing Ctenocephalides felis vector fleas on the treated cat, and the treatment and control of tick infestations with Amblyomma americanum (lone star tick), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), and Ixodes scapularis (black-legged tick) for one month in cats and kittens 8 weeks and older, and weighing 2.8 pounds or greater. Simparica TRIO® is indicated for the prevention of heartworm disease caused by Dirofilaria immitis and for the treatment and control of roundworm (immature adult and adult Toxocara canis and adult Toxascaris leonina ) and hookworm (L4, immature adult, and adult Ancylostoma caninum and adult Uncinaria stenocephala ) infections. Simparica TRIO® kills adult fleas ( Ctenocephalides felis ) and is indicated for the treatment and prevention of flea infestations, the prevention of Dipylidium caninum (tapeworm) infections as a direct result of killing Ctenocephalides felis vector fleas on the treated dog, and the treatment and control of tick infestations with Amblyomma americanum (lone star tick), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (Asian longhorned tick) for one month in dogs and puppies 8 weeks of age and older, and weighing 2.8 pounds or greater. Simparica TR O® is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks. Species commonly shown: Both, Dog.

Generic name
Sarolaner
Brand names
SIMPARICA®, Simparica Chewables
Manufacturer
Zoetis Inc.
Species
Both, Dog
Dosage forms
Chewable Tablets
Prescription
Prescription required
Completeness
100%
Validation
Complete
Brand names
SIMPARICA® Simparica Chewables
Dosage forms
Chewable Tablets

Indications / Uses

SIMPARICA® 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), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (Asian longhorned tick)] for one month in dogs 6 months of age or older and weighing 2.8 pounds or greater. SIMPARICA® is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks. revolution® PLUS is indicated for the prevention of heartworm disease caused by Dirofilaria immitis , the treatment and control of roundworm ( Toxocara cati ) and intestinal hookworm ( Ancylostoma tubaeforme ) infections, and the treatment and control of ear mite ( Otodectes cynotis ) infestations. revolution® PLUS kills adult fleas ( Ctenocephalides felis ) and is indicated for the treatment and prevention of flea infestations, the prevention of Dipylidium caninum (tapeworm) infections as a direct result of killing Ctenocephalides felis vector fleas on the treated cat, and the treatment and control of tick infestations with Amblyomma americanum (lone star tick), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), and Ixodes scapularis (black-legged tick) for one month in cats and kittens 8 weeks and older, and weighing 2.8 pounds or greater. Simparica TRIO® is indicated for the prevention of heartworm disease caused by Dirofilaria immitis and for the treatment and control of roundworm (immature adult and adult Toxocara canis and adult Toxascaris leonina ) and hookworm (L4, immature adult, and adult Ancylostoma caninum and adult Uncinaria stenocephala ) infections. Simparica TRIO® kills adult fleas ( Ctenocephalides felis ) and is indicated for the treatment and prevention of flea infestations, the prevention of Dipylidium caninum (tapeworm) infections as a direct result of killing Ctenocephalides felis vector fleas on the treated dog, and the treatment and control of tick infestations with Amblyomma americanum (lone star tick), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (Asian longhorned tick) for one month in dogs and puppies 8 weeks of age and older, and weighing 2.8 pounds or greater. Simparica TR O® 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, Seizure NOS, Lethargy (see also Central nervous system depression in 'Neurological'), Tremor, Diarrhoea, Lack of efficacy (ectoparasite) - tick NOS.

FAQ

Both, Dog

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:

SIMPARICA® 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),...

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:

  • wobbly/unsteady walking (1 reports)
  • Increased seizure frequency (1 reports)
  • Hyperglycaemia (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 Sarolaner; use the official documents and your veterinarian's instructions for product-specific decisions.

Source: openFDA case USA-USFDACVM-2026-US-001364
Safety signal coverage Reported signals

32 tracked reaction signals; 32 reported cases; 19 serious reports; 2 species groups. These are reporting and label-derived signals for interpretation with a veterinarian.

Source: openFDA case USA-USFDACVM-2026-US-001364
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-2026-US-001364
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

Unsteady walking (ataxia) (1 reports), Increased seizure frequency (1 reports), Hyperglycaemia (1 reports), Hyperactivity (1 reports), Heart failure (1 reports)

Body systems represented Signal grouping

Digestive (4), Skin & allergy (1), Neurologic (2), Behavior (1)

Explore supporting adverse reports

Species and breed lens

Species represented in reports Species lens

Cat (17 reports), Dog (15 reports)

Breed metadata in reports Metadata only

Domestic Shorthair (2), Havanese (1), Shepherd Dog - Belgian Malinois (1), Collie - Smooth-haired (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 Sarolaner 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

wobbly/unsteady walking, Increased seizure frequency, Hyperglycaemia

Call sooner if Escalation

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

Bottom line: Use this Sarolaner 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-2026-US-001364 · adverse_reaction · adverse reactions
  2. FDA application profile · official_label · quick facts
  3. Medication usage source · fda_animal_drugs · quick facts
  4. FOI · document · documents
  5. FOI · document · documents
  6. FOI · 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:

  • wobbly/unsteady walking
  • Increased seizure frequency
  • Hyperglycaemia

Most reported reactions:

  • Unsteady walking (ataxia) (1 reports)
  • Increased seizure frequency (1 reports)
  • Hyperglycaemia (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
Dog
Indication / use
SIMPARICA® kills adult fleas, and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis ), and the treatment and control of tick infestations …
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.

Quick Facts

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

Species: Both
Manufacturer: Zoetis Inc.
Form: Chewable Tablets
Identifiers:
NADA: 141452 NADA: 141502 NADA: 141521 NDC Package: 54771-0411-1 NDC Package: 54771-0411-2 NDC Package: 54771-0411-3 NDC Package: 54771-0412-1 NDC Package: 54771-0412-2 NDC Package: 54771-0412-3 NDC Package: 54771-0416-1 NDC Package: 54771-0416-2 NDC Package: 54771-0416-3 NDC Package: 54771-2015-1 NDC Package: 54771-2015-2 NDC Package: 54771-2015-3 NDC Package: 54771-2016-1 NDC Package: 54771-2016-2 NDC Package: 54771-2016-3 NDC Package: 54771-2017-1 NDC Package: 54771-2017-2
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
19
Matching reports
3
Active filters
1
Selected filters
Body system: Digestive Clear
Reset
Showing up to 50 matching reports.

USA-USFDACVM-2026-US-013647

Received 2026-03-23 · MSK · MSK

Non-serious
Species
Dog
Breed
['Retriever - Labrador', 'Poodle - Miniature']
Size / weight
25-49 lb (19.68 Kilogram)
Age
1-3 years (2 Year)
Sex
Female Neutered
Region
USA
Reactions
HidingVocalisationPacingAnorexiaGeneralised itchingDroolingVomiting
Body systems
OtherDigestiveSkin & allergy
Outcomes
Ongoing

USA-USFDACVM-2025-US-075360

Received 2025-12-23 · MSK · MSK

Non-serious
Species
Dog
Breed
Boxer (German Boxer)
Size / weight
25-49 lb (19.867 Kilogram)
Age
8+ years (8 Year)
Sex
Female Neutered
Region
USA
Reactions
Vomiting
Body systems
Digestive
Outcomes
Ongoing

USA-USFDACVM-2025-US-068338

Received 2025-11-12 · MSK · MSK

Non-serious
Species
Cat
Breed
Domestic Shorthair
Size / weight
10-24 lb (7.938 Kilogram)
Age
4-7 years (6 Year)
Sex
Male Neutered
Region
USA
Reactions
Not himself/herselfInappropriate urinationVomitingLack of efficacy (endoparasite) - tapewormLack of efficacy (endoparasite) - hookwormLack of efficacy (endoparasite) - NOS
Body systems
OtherDigestiveEffectiveness
Outcomes
Outcome Unknown

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

Tracked signals
32
Reported cases
32
Serious reports
19
Species represented
2
Grouped by Body System
Digestive (4) · Vomiting, Loss of appetite, Drooling Skin & allergy (1) · Generalised itching Neurologic (2) · Unsteady walking (ataxia), Increased seizure frequency Behavior (1) · Behavioral disorder (unspecified) Other (24) · Inappropriate urination, Hyperglycaemia, Hyperactivity
Most Reported Reactions
Reaction Body system Cases Species Serious cases
Neurologic 1 Cat 1
Neurologic 1 Cat 1
Other 1 Cat 1
Other 1 Dog 1
Other 1 Dog 1
Other 1 Dog 1
Other 1 Dog 1
Other 1 Cat 1

Species coverage: Cat (17) Dog (15)

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

2

FOI

11

SIMPARICA®

SPL · SPL

FDA Structured Product Label

SIMPARICA®

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

Sponsor
Zoetis Inc.
NADA
141-452
Status
RX
Form
Chewable Tablets
Route
Oral
Species
Dog
Composition / specifications
5 mg, 10 mg, 20 mg, 40 mg, 80 mg, and 120 mg

Dogs

Indication

SIMPARICA® 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), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus
sanguineus
(brown dog tick), and Haemaphysalis longicornis (Asian longhorned tick)] for one month in dogs 6 months of age or older and weighing 2.8 pounds or greater. SIMPARICA® is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks.

Dosage
0.91 mg/lb (2 mg/kg body weight), one per month.

Simparica Chewables SPL

SPL · Structured Product Label

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

FOI Summary sN 141-452 Approved November 22, 2024.pdf

FOI · FOI

FOI Summary sN 141-452 Approved May 18, 2021.pdf

FOI · FOI

FOI Summary sN-141452 Approved December 12, 2016.pdf

FOI · FOI

UCM488816.pdf

FOI · FOI

FOI Summary oN 141-521 Approved February 27, 2020.pdf

FOI · FOI summary

FOI Summary sN 141-521 Approved December 23, 2021.sum.pdf

FOI · FOI summary

FOI Summary sN 141-521 Approved November 6, 2024.pdf

FOI · FOI summary

FOI Summary sN 141-521 Approved April 8 2025_ceg_ef.pdf

FOI · FOI summary

FOI Summary oN 141-502 Approved November 9, 2018.pdf

FOI · FOI summary

FOI Summary sN 141-502 Approved December 14, 2023.pdf

FOI · FOI summary

FOI Summary sN 141-502 Approved November 13, 2024.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 Aug 6, 2026, 7:47 PM UTC
    The reference fact projection used for browse cards and quick facts.
  • Animal Drugs @ FDA: Source FDA | Refreshed Aug 6, 2026, 7:46 PM 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 Aug 6, 2026, 7:47 PM UTC
    Package/product NDCs from FDA’s electronic listing directory (XLS).
  • openFDA reaction terms: Source FDA openFDA | Refreshed Aug 6, 2026, 7:52 PM UTC
  • openFDA case summaries: Source FDA openFDA | Refreshed Aug 6, 2026, 7:52 PM UTC
Official (FDA)
Identity: Generic ingredient • FDA branded products available
Official FDA brands: Simparica Chewables
Manufacturer mapping: Zoetis Inc.
Case-reported brands (openFDA): MSK
Catalog species: Both FDA-labeled species: Dog
Rx/OTC: RX
Form/route: Chewable Tablets Oral
Applications: NADA 141-452
NDC: Packages 54771-2015-1 54771-2015-2 54771-2015-3 54771-2016-1 54771-2016-2 54771-2016-3 Products 54771
Documents: 4 (FOI: 4) • SPL: 1 Label highlights Official documents
Safety (openFDA)
Top reactions: Dog 29 Cat 18 View
Case summaries: 19 (showing 8) View
openFDA reports are unverified and do not prove causation.

Explore
Linked using: Fda_Label (0.95), Fda_Label (0.95), Usage_Inferred (0.78)

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
Unsteady walking (ataxia) (1) Increased seizure frequency (1) Hyperglycaemia (1) Hyperactivity (1) Heart failure (1) Foam in the mouth (1) Fluid in thorax (1) Fever (1)

Identifiers & Packages

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

Identifiers
NADA: 141452 NADA: 141502 NADA: 141521 NDC Package: 54771-0411-1 NDC Package: 54771-0411-2 NDC Package: 54771-0411-3 NDC Package: 54771-0412-1 NDC Package: 54771-0412-2 NDC Package: 54771-0412-3 NDC Package: 54771-0416-1 NDC Package: 54771-0416-2 NDC Package: 54771-0416-3 NDC Package: 54771-2015-1 NDC Package: 54771-2015-2 NDC Package: 54771-2015-3 NDC Package: 54771-2016-1 NDC Package: 54771-2016-2 NDC Package: 54771-2016-3 NDC Package: 54771-2017-1 NDC Package: 54771-2017-2 NDC Package: 54771-2017-3 NDC Package: 54771-2018-1 NDC Package: 54771-2018-2 NDC Package: 54771-2018-3
Package NDC Product NDC Form / Route Status
54771-0411-1 54771 -
54771-0411-2 54771 -
54771-0411-3 54771 -
54771-0412-1 54771 -
54771-0412-2 54771 -
54771-0412-3 54771 -
54771-0416-1 54771 -
54771-0416-2 54771 -
54771-0416-3 54771 -
54771-2015-1 54771 -
54771-2015-2 54771 -
54771-2015-3 54771 -
54771-2016-1 54771 -
54771-2016-2 54771 -
54771-2016-3 54771 -
54771-2017-1 54771 -
54771-2017-2 54771 -
54771-2017-3 54771 -
54771-2018-1 54771 -
54771-2018-2 54771 -

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 131 Clinical 1 Manufacturer 0 Marketing 0
Current Field Facts
  • side_effects: Top reported reactions (openFDA): Vomiting, Seizure NOS, Lethargy (see also Central nervous system depression in 'Neurological'), Tremor, Diarrhoea, Lack of ef… (Clinical, 2026-04-11)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-08-06)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-08-05)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-08-04)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-08-03)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-08-02)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-08-01)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-31)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-30)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-29)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-28)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-27)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-26)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-25)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-25)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-22)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-22)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-22)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-20)
  • indications: Simparica™ kills adult fleas and is indicated for the treatment and prevention of flea infestations ( Ctenocephalides felis) and the treatment and control of t… (Official, 2026-07-19)
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
SIMPARICA®
RX
Sarolaner
Chewable Tablets Oral
Zoetis Inc. NADA 141-452 Approved Dec 2, 2024

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: Dog
Composition / specifications
5 mg, 10 mg, 20 mg, 40 mg, 80 mg, and 120 mg
Dogs
Indication

SIMPARICA® 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), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus
sanguineus
(brown dog tick), and Haemaphysalis longicornis (Asian longhorned tick)] for one month in dogs 6 months of age or older and weighing 2.8 pounds or greater. SIMPARICA® is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks.

Dosage
0.91 mg/lb (2 mg/kg body weight), one per month.
Limitations

FDA page: Open in Animal Drugs @ FDA

Usage

SIMPARICA® 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), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (Asian longhorned tick)] for one month in dogs 6 months of age or older and weighing 2.8 pounds or greater. SIMPARICA® is indicated for the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks. revolution® PLUS is indicated for the prevention of heartworm disease caused by Dirofilaria immitis , the treatment and control of roundworm ( Toxocara cati ) and intestinal hookworm ( Ancylostoma tubaeforme ) infections, and the treatment and control of ear mite ( Otodectes cynotis ) infestations. revolution® PLUS kills adult fleas ( Ctenocephalides felis ) and is indicated for the treatment and prevention of flea infestations, the prevention of Dipylidium caninum (tapeworm) infections as a direct result of killing Ctenocephalides felis vector fleas on the treated cat, and the treatment and control of tick infestations with Amblyomma americanum (lone star tick), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), and Ixodes scapularis (black-legged tick) for one month in cats and kittens 8 weeks and older, and weighing 2.8 pounds or greater. Simparica TRIO® is indicated for the prevention of heartworm disease caused by Dirofilaria immitis and for the treatment and control of roundworm (immature adult and adult Toxocara canis and adult Toxascaris leonina ) and hookworm (L4, immature adult, and adult Ancylostoma caninum and adult Uncinaria stenocephala ) infections. Simparica TRIO® kills adult fleas ( Ctenocephalides felis ) and is indicated for the treatment and prevention of flea infestations, the prevention of Dipylidium caninum (tapeworm) infections as a direct result of killing Ctenocephalides felis vector fleas on the treated dog, and the treatment and control of tick infestations with Amblyomma americanum (lone star tick), Amblyomma maculatum (Gulf Coast tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (Asian longhorned tick) for one month in dogs and puppies 8 weeks of age and older, and weighing 2.8 pounds or greater. Simparica TR O® 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) • Dog Loss of appetite (1) • Dog Drooling (1) • Dog Decreased appetite (1) • Cat

Showing top 5 for Digestive.

Skin & allergy
Generalised itching (1) • Dog

Showing top 5 for Skin & allergy.

Neurologic
Unsteady walking (1) • Cat Increased seizure frequency (1) • Cat

Showing top 5 for Neurologic.

Behavior
Behavioral disorder (1) • Cat

Showing top 5 for Behavior.

Other
Inappropriate urination (1) • Cat Hyperglycaemia (1) • Cat Hyperactivity (1) • Dog Hiding (1) • Dog Heart failure (1) • Dog
Show more (19)
Foam in the mouth (1) • Dog Fluid in thorax (1) • Dog Fever (1) • Cat Fear/fearful (1) • Dog Excessive chewing, licking and/or grooming (1) • Cat Epilepsy (1) • Dog Dysphoria (1) • Cat Drunken gait (1) • Dog Disorientation (1) • Dog Dilated pupils (1) • Cat Clumsy (1) • Cat Ascites (1) • Dog Application site scratching (1) • Cat Application site irritation (1) • Cat Apnoea (1) • Dog Agitation (1) • Cat Administration error NOS (1) • Cat Accidental exposure (1) • Cat Abnormal stool colouration (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.

Dog, Havanese, Female, 9 year, 5.216 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 20 Milligram per animal, Frequency: 1 per month • Reactions: Seizure NOS • Outcome: Recovered/Normal

  • Report ID: USA-USFDACVM-2026-US-013813
  • Serious AE: Yes
  • Treated For AE: No
  • Sex: Female
  • Age: 9.00 Year
  • Weight: 5.216 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 20 Milligram per animal
  • Frequency: 1 per month
Reactions Reported:
Seizure NOS
Outcomes: Recovered/Normal

Dog, Shepherd Dog - Belgian Malinois, Female, 6 year, 32.205 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 80 Milligram per animal, Frequency: 1 per month • Reactions: Itching, Scratching • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2026-US-013811
  • Serious AE: Yes
  • Treated For AE: Yes
  • Sex: Female
  • Age: 6.00 Year
  • Weight: 32.205 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 80 Milligram per animal
  • Frequency: 1 per month
Reactions Reported:
Itching Scratching
Outcomes: Ongoing

Dog, Collie - Smooth-haired, Female, 8 year, 27.216 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 80 Milligram per animal, Frequency: 1 per month • Reactions: Seizure NOS • Outcome: Recovered/Normal

  • Report ID: USA-USFDACVM-2026-US-013760
  • Serious AE: Yes
  • Treated For AE: No
  • Sex: Female
  • Age: 8.00 Year
  • Weight: 27.216 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 80 Milligram per animal
  • Frequency: 1 per month
Reactions Reported:
Seizure NOS
Outcomes: Recovered/Normal

Cat, Domestic Shorthair, Female, 12.5 year, 2.268 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 120 Milligram per animal • Reactions: Seizure NOS, Accidental exposure, Labeled drug-species interaction • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2026-US-013764
  • Serious AE: Yes
  • Treated For AE: Yes
  • Sex: Female
  • Age: 12.50 Year
  • Weight: 2.268 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 120 Milligram per animal
Reactions Reported:
Seizure NOS Accidental exposure Labeled drug-species interaction
Outcomes: Ongoing

Dog, ['Retriever - Labrador', 'Shepherd (unspecified)'], Male, 9 year, 34.019 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 1 dose per animal • Reactions: Seizure NOS, Drunken gait, Shaking, Unable to walk, Fear/fearful • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2026-US-013476
  • Serious AE: Yes
  • Treated For AE: No
  • Sex: Male
  • Age: 9.00 Year
  • Weight: 34.019 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 1 dose per animal
Reactions Reported:
Seizure NOS Drunken gait Shaking Unable to walk Fear/fearful
Outcomes: Ongoing

Dog, ['Retriever - Labrador', 'Poodle - Miniature'], Female, 2 year, 19.68 kilogram • Drug: MSK, Unknown • Reactions: Hiding, Vocalisation, Pacing, Loss of appetite, Generalised itching… • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2026-US-013647
  • Serious AE: No
  • Treated For AE: Yes
  • Sex: Female
  • Age: 2.00 Year
  • Weight: 19.680 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Unknown
Reactions Reported:
Hiding Vocalisation Pacing Loss of appetite Generalised itching Drooling Vomiting
Outcomes: Ongoing

Dog, Spaniel (unspecified), Male, 12 year, 11.476 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 40 Milligram per animal • Reactions: Trembling, Unsteady walking (ataxia) • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2026-US-011644
  • Serious AE: No
  • Treated For AE: No
  • Sex: Male
  • Age: 12.00 Year
  • Weight: 11.476 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 40 Milligram per animal
Reactions Reported:
Trembling Unsteady walking (ataxia)
Outcomes: Ongoing

Cat, Domestic Shorthair, Female, 11 month, 3.221 kilogram • Drug: MSK, Tablet, chewable, Oral, Dose: 120 Milligram per animal • Reactions: Accidental exposure, Seizure NOS, Twitching, Labeled drug-species interaction • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2026-US-011695
  • Serious AE: Yes
  • Treated For AE: Yes
  • Sex: Female
  • Age: 11.00 Month
  • Weight: 3.221 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Tablet, chewable
  • Dose: 120 Milligram per animal
Reactions Reported:
Accidental exposure Seizure NOS Twitching Labeled drug-species interaction
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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