Drug profile

The FDA adverse-event record for Fenbendazol Powder Mix

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

71
adverse-event reports
22.5%
death-coded share
Unknown
most-reported species
13
Death - 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.
71
Total Reports
16
Deaths Reported
22.5%
Death Rate

Active Ingredients

Fenbendazol Powder Mix

Administration Routes

OralUnknownTopical

Species Affected

Unknown 22
Cattle 17
Turkey 9
Pig 9
Other Deer 3
Goat 2
Sheep 2
Dog 2
Human 2
Other 1

Most Affected Breeds

Unknown 36
Cattle (other) 12
Pig (unknown) 6
Turkey (unknown) 3
Commercial hybrid 2
Sheep (unknown) 2
Holstein-Friesian also known as Holstein 2
Goat (unknown) 1
Shorthorn (unspecified) 1
Duroc 1

Most Reported Reactions

Death 13
Lack of efficacy (endoparasite) - NOS 7
Contamination, Insects 5
INEFFECTIVE, WORMS NOS 4
Product problem 4
UNPALATABLE 4
INEFFECTIVE, WORMS 4
Underfilling, Container 4
Contamination, Mold 3
Lack of efficacy - NOS 3
Lack of efficacy (endoparasite) - roundworm NOS 3
Abortion 2

Outcome Breakdown

Outcome Unknown
18 (35.3%)
Died
13 (25.5%)
Ongoing
11 (21.6%)
Recovered/Normal
6 (11.8%)
Euthanized
3 (5.9%)

Fenbendazol Powder Mix Adverse Event Insights

71 reports name Fenbendazol Powder Mix; 16 recorded a death outcome (22.5% of reported events, not a population-level mortality rate). Active ingredient: Fenbendazol Powder Mix. Administration routes: Oral, Unknown, Topical.

By species: Unknown (22 reports), Cattle (17 reports), Turkey (9 reports). By breed: Unknown (36), Cattle (other) (12), Pig (unknown) (6).

Leading clinical signs: Death (13), Lack of efficacy (endoparasite) - NOS (7), Contamination, Insects (5), INEFFECTIVE, WORMS NOS (4). Outcome, 51 coded reports: Outcome Unknown leads at 35.3%.

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.