Pet Recall Facts

Ingredients / Fenbendazole

Fenbendazole: FDA adverse event reports for pets

Reports received through June 26, 2026. Data and limitations.

7,779Total reports
5,919Dog reports
288Cat reports

FDA-approved products with this ingredient (Green Book)

All approved products with this ingredient, for any species.

Brand names come only from the Green Book. Brand names in FDA's public report data are masked, so counts cannot be attributed to any brand. Ingredient names in the reports are written many ways; we group them under one ingredient name and count each report once per ingredient (method).

Reports by year received

198712
19886
198921
19908
19917
199220
19937
199423
199533
199622
199726
199836
199942
200012
200120
200218
200321
200460
2005169
2006167
2007205
2008246
2009290
2010272
2011304
2012357
2013377
2014340
2015334
2016521
2017430
2018397
2019355
2020428
2021355
2022336
2023403
2024425
2025478
2026196

Species named in reports

Dog5,919
Not given572
Cattle537
Cat288
Horse170
Human89
Goat73
Pig39

Signs reported after Fenbendazole

Vomiting1,645
Diarrhoea1,073
Death874
Anorexia695
Lethargy (see also Central nervous system depression in Neurological)644
Lack of efficacy (endoparasite) - hookworm612
Depression555
Emesis (multiple)424
Lack of efficacy (endoparasite) - tapeworm247
Other abnormal test result NOS242
Underdose235
Lack of efficacy - NOS228
Not eating224
Death by euthanasia213
Ataxia195
Behavioural disorder NOS191
Lack of efficacy (endoparasite) - roundworm NOS178
INEFFECTIVE, HOOKS178
Hyperactivity175
Bloody diarrhoea175
Vocalisation168
Fever166
Weakness154
Weight loss151
Lack of efficacy (endoparasite) - NOS150

Breeds named in reports

Crossbred Canine/dog1,000
Retriever - Labrador502
Dog (unknown)499
Pit Bull339
Chihuahua290
Shepherd Dog - German248
Retriever - Golden207
Cattle (other)198
Greyhound196
Beagle179
Domestic Shorthair165
Poodle (unspecified)156
Crossbred Bovine/Cattle136
Boxer (German Boxer)129
Shih Tzu114

Reported outcomes

Ongoing1,828
Recovered/Normal1,345
Outcome Unknown1,276
Died1,004
Euthanized144
Recovered with Sequela21

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