Drug profile

The FDA adverse-event record for Fenbendazol Granules

2,382 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Fenbendazol Granules. See the species affected, top reactions, and outcomes below.

2,382
adverse-event reports
6.0%
death-coded share
Dog
most-reported species
437
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.
2,382
Total Reports
143
Deaths Reported
6.0%
Death Rate

Active Ingredients

Fenbendazol Granules

Administration Routes

OralUnknownTopicalSubcutaneousRespiratory (Inhalation)

Species Affected

Dog 2,128
Unknown 170
Cat 63
Human 21

Most Affected Breeds

Crossbred Canine/dog 439
Unknown 192
Retriever - Labrador 163
Dog (unknown) 143
Pit Bull 118
Chihuahua 89
Shepherd Dog - German 75
Beagle 61
Retriever - Golden 60
Greyhound 47

Most Reported Reactions

Vomiting 437
Diarrhoea 344
Emesis (multiple) 342
Lethargy (see also Central nervous system depression in 'Neurological') 313
Lack of efficacy (endoparasite) - hookworm 205
Underdose 196
Not eating 142
Defect Unknown/Not Specified 133
Anorexia 119
Death 96
Lack of efficacy (endoparasite) - tapeworm 89
Overdose 86

Outcome Breakdown

Ongoing
1,089 (48.8%)
Recovered/Normal
658 (29.5%)
Outcome Unknown
336 (15.0%)
Died
102 (4.6%)
Euthanized
44 (2.0%)
Recovered with Sequela
4 (0.2%)

Fenbendazol Granules Adverse Event Insights

2,382 reports name Fenbendazol Granules; 143 recorded a death outcome (6.0% of reported events, not a population-level mortality rate). Active ingredient: Fenbendazol Granules. Administration routes: Oral, Unknown, Topical, Subcutaneous.

By species: Dog (2,128 reports), Unknown (170 reports), Cat (63 reports). By breed: Crossbred Canine/dog (439), Unknown (192), Retriever - Labrador (163).

Leading clinical signs: Vomiting (437), Diarrhoea (344), Emesis (multiple) (342), Lethargy (see also Central nervous system depression in 'Neurological') (313). Outcome, 2,233 coded reports: Ongoing leads at 48.8%.

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.