Drug profile

The FDA adverse-event record for Flumethrin And Imidacloprid

155 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Flumethrin And Imidacloprid. See the species affected, top reactions, and outcomes below.

155
adverse-event reports
5.2%
death-coded share
Dog
most-reported species
34
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.
155
Total Reports
8
Deaths Reported
5.2%
Death Rate

Active Ingredients

Flumethrin And Imidacloprid

Administration Routes

TopicalUnknownOtherOral

Species Affected

Dog 135
Cat 19
Other Canids 1

Most Affected Breeds

Retriever - Labrador 15
Domestic Shorthair 12
Shepherd Dog - Australian 8
Chihuahua 8
Shih Tzu 8
Siberian Husky 7
Terrier - Yorkshire 7
Shepherd Dog - German 7
Terrier - Bull - American Pit 6
Dog (unknown) 4

Most Reported Reactions

Vomiting 34
Lethargy (see also Central nervous system depression in 'Neurological') 27
Lack of efficacy (ectoparasite) - flea 17
Anorexia 15
Diarrhoea 14
Seizure NOS 9
Not eating 9
Lack of efficacy - NOS 8
INEFFECTIVE, LOSS OF EFFECT 7
Lack of efficacy (tick) 7
Pruritus 6
Other abnormal test result NOS 6

Outcome Breakdown

Ongoing
85 (54.8%)
Outcome Unknown
33 (21.3%)
Recovered/Normal
29 (18.7%)
Died
5 (3.2%)
Euthanized
3 (1.9%)

Flumethrin And Imidacloprid Adverse Event Insights

155 reports name Flumethrin And Imidacloprid; 8 recorded a death outcome (5.2% of reported events, not a population-level mortality rate). Active ingredient: Flumethrin And Imidacloprid. Administration routes: Topical, Unknown, Other, Oral.

By species: Dog (135 reports), Cat (19 reports), Other Canids (1 reports). By breed: Retriever - Labrador (15), Domestic Shorthair (12), Shepherd Dog - Australian (8).

Leading clinical signs: Vomiting (34), Lethargy (see also Central nervous system depression in 'Neurological') (27), Lack of efficacy (ectoparasite) - flea (17), Anorexia (15). Outcome, 155 coded reports: Ongoing leads at 54.8%.

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.