Drug profile

The FDA adverse-event record for Albendazole

367 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Albendazole. See the species affected, top reactions, and outcomes below.

367
adverse-event reports
43.9%
death-coded share
Cattle
most-reported species
109
Death - top reaction
Verify with FDA CVM →
Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
367
Total Reports
161
Deaths Reported
43.9%
Death Rate

Active Ingredients

Albendazole

Administration Routes

OralUnknownIntrauterineTopicalSubcutaneous

Species Affected

Cattle 177
Sheep 66
Unknown 52
Goat 30
Dog 29
Chicken 2
Human 2
Buffalo 2
Other Rodents 1
Turkey 1

Most Affected Breeds

Mixed (Cattle) 87
Unknown 59
Cattle (other) 45
Sheep (unknown) 40
Aberdeen Angus 20
Goat (unknown) 19
Cattle (unknown) 8
Katahdin 7
Dog (unknown) 6
Crossbred Bovine/Cattle 5

Most Reported Reactions

Death 109
Lack of efficacy (bacteria) - NOS 30
Lack of efficacy - NOS 28
Anorexia 19
INEFFECTIVE, WORMS NOS 18
Diarrhoea 17
Unexplained death 16
Overdose 16
Lethargy (see also Central nervous system depression in 'Neurological') 16
INEFFECTIVE, WORMS 16
No sign 15
Lack of efficacy (endoparasite) - trematode 14

Outcome Breakdown

Outcome Unknown
164 (42.1%)
Died
158 (40.5%)
Recovered/Normal
28 (7.2%)
Ongoing
25 (6.4%)
Euthanized
9 (2.3%)
Recovered with Sequela
6 (1.5%)

Albendazole Adverse Event Insights

367 reports name Albendazole; 161 recorded a death outcome (43.9% of reported events, not a population-level mortality rate). Active ingredient: Albendazole. Administration routes: Oral, Unknown, Intrauterine, Topical.

By species: Cattle (177 reports), Sheep (66 reports), Unknown (52 reports). By breed: Mixed (Cattle) (87), Unknown (59), Cattle (other) (45).

Leading clinical signs: Death (109), Lack of efficacy (bacteria) - NOS (30), Lack of efficacy - NOS (28), Anorexia (19). Outcome, 390 coded reports: Outcome Unknown leads at 42.1%.

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.