Drug profile

The FDA adverse-event record for Fipronil + (S)-Methoprene + Amitraz

22 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Fipronil + (S)-Methoprene + Amitraz. See the species affected, top reactions, and outcomes below.

22
adverse-event reports
0.0%
death-coded share
Dog
most-reported species
7
Vomiting - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
22
Total Reports
0
Deaths Reported
0.0%
Death Rate

Active Ingredients

Fipronil + (S)-Methoprene + Amitraz

Administration Routes

TopicalUnknownCutaneous

Species Affected

Dog 22

Most Affected Breeds

Shepherd Dog - German 4
Boxer (German Boxer) 3
Retriever - Labrador 3
Schipperke 3
Dog (other) 1
Retriever (unspecified) 1
Griffon - French Wire-haired Pointing 1
Schnauzer (unspecified) 1
Shepherd Dog (unspecified) 1
Deutsche Dogge, Great Dane 1

Most Reported Reactions

Vomiting 7
Lethargy (see also Central nervous system depression in 'Neurological') 4
Lack of efficacy - NOS 4
Lack of efficacy (ectoparasite) - flea 4
Emesis 3
Drug dose omission 3
UNPALATABLE 3
Seizure NOS 2
Lack of efficacy (endoparasite) - hookworm 2
Scratching 2
Elevated blood urea nitrogen (BUN) 1
Overdose 1

Outcome Breakdown

Recovered/Normal
9 (40.9%)
Outcome Unknown
9 (40.9%)
Recovered with Sequela
4 (18.2%)

Fipronil + (S)-Methoprene + Amitraz Adverse Event Insights

22 reports name Fipronil + (S)-Methoprene + Amitraz; 0 recorded a death outcome (0.0% of reported events, not a population-level mortality rate). Active ingredient: Fipronil + (S)-Methoprene + Amitraz. Administration routes: Topical, Unknown, Cutaneous.

By species: Dog (22 reports). By breed: Shepherd Dog - German (4), Boxer (German Boxer) (3), Retriever - Labrador (3).

Leading clinical signs: Vomiting (7), Lethargy (see also Central nervous system depression in 'Neurological') (4), Lack of efficacy - NOS (4), Lack of efficacy (ectoparasite) - flea (4). Outcome, 22 coded reports: Recovered/Normal leads at 40.9%.

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.