Drug profile

The FDA adverse-event record for Dinotefuran + Pyriproxyfen

242 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Dinotefuran + Pyriproxyfen. See the species affected, top reactions, and outcomes below.

242
adverse-event reports
3.3%
death-coded share
Dog
most-reported species
59
Emesis - 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.
242
Total Reports
8
Deaths Reported
3.3%
Death Rate

Active Ingredients

DinotefuranDinotefuran + PyriproxyfenPyriproxyfen

Administration Routes

TopicalUnknownOral

Species Affected

Dog 221
Cat 20
Unknown 1

Most Affected Breeds

Retriever - Labrador 28
Domestic Shorthair 13
Pit Bull 11
Retriever - Golden 11
Boxer (German Boxer) 10
Collie - Border 9
Chihuahua 8
Terrier (unspecified) 8
Crossbred Canine/dog 8
Terrier - Yorkshire 7

Most Reported Reactions

Emesis 59
Vomiting 46
Lethargy (see also Central nervous system depression in 'Neurological') 41
Diarrhoea 18
Lack of efficacy (ectoparasite) - flea 14
Emesis (multiple) 13
Lack of efficacy - NOS 12
Other abnormal test result NOS 10
Behavioural disorder NOS 10
Weight loss 9
Seizure NOS 8
INEFFECTIVE, HOOKS 8

Outcome Breakdown

Recovered/Normal
135 (56.0%)
Outcome Unknown
75 (31.1%)
Ongoing
12 (5.0%)
Recovered with Sequela
11 (4.6%)
Euthanized
6 (2.5%)
Died
2 (0.8%)

Dinotefuran + Pyriproxyfen Adverse Event Insights

242 reports name Dinotefuran + Pyriproxyfen; 8 recorded a death outcome (3.3% of reported events, not a population-level mortality rate). Active ingredients: Dinotefuran, Dinotefuran + Pyriproxyfen, Pyriproxyfen. Administration routes: Topical, Unknown, Oral.

By species: Dog (221 reports), Cat (20 reports), Unknown (1 reports). By breed: Retriever - Labrador (28), Domestic Shorthair (13), Pit Bull (11).

Leading clinical signs: Emesis (59), Vomiting (46), Lethargy (see also Central nervous system depression in 'Neurological') (41), Diarrhoea (18). Outcome, 241 coded reports: Recovered/Normal leads at 56.0%.

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.