Pet Recall Facts

Ingredients / Pyrantel

Pyrantel: FDA adverse event reports for pets

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

256,977Total reports
234,774Dog reports
1,882Cat 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

19873
19882
19891
19904
199111
19926
19938
199423
199540
1996139
1997132
1998230
1999227
2000290
2001308
2002482
2003732
20041,979
20052,758
20063,835
20075,628
20086,636
20097,935
20107,985
20117,372
20129,198
201311,122
201410,886
201511,736
201611,666
201712,307
201811,899
201912,158
202012,480
202116,672
202217,739
202318,365
202420,653
202522,247
202611,078

Species named in reports

Dog234,774
Not given19,027
Cat1,882
Horse947
Human243
Other40
Pig10
Other Canids10

Signs reported after Pyrantel

Vomiting38,446
INEFFECTIVE, HEARTWORM LARVAE35,802
Lack of efficacy (endoparasite) - hookworm32,497
Lack of efficacy (endoparasite) - heartworm29,683
Digestive tract disorder NOS16,836
Diarrhoea16,513
Lethargy (see also Central nervous system depression in Neurological)13,256
INEFFECTIVE, ASCARIDS NOS12,009
Cardiac disorder NOS10,072
Lack of efficacy (endoparasite) - roundworm NOS9,474
Tablets, Abnormal8,994
Lack of efficacy - NOS8,819
Seizure NOS7,890
Lack of efficacy (bacteria) - Borrelia7,691
INEFFECTIVE, HOOKS7,192
Anorexia4,353
Lack of efficacy (endoparasite) - tapeworm4,351
Lack of efficacy (ectoparasite) - tick NOS3,816
Death3,477
Containers, Damaged3,458
Ataxia3,335
Emesis (multiple)3,309
Emesis3,305
Not eating3,223
Behavioural disorder NOS2,996

Breeds named in reports

Retriever - Labrador35,801
Crossbred Canine/dog24,779
Dog (unknown)21,867
Retriever - Golden14,257
Shepherd Dog - German11,820
Poodle (unspecified)7,212
Chihuahua6,965
Beagle6,852
Pit Bull5,507
Shepherd Dog - Australian5,491
Shih Tzu5,432
Terrier - Yorkshire5,325
Boxer (German Boxer)5,033
Dachshund (unspecified)4,029
Terrier (unspecified)3,987

Reported outcomes

Outcome Unknown84,013
Ongoing50,730
Recovered/Normal42,156
Recovered with Sequela16,588
Died3,970
Euthanized1,653

Report a problem to FDA