Drug profile

The FDA adverse-event record for Pyrantel Pamoate ( Pyrantel Embonate)

155 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Pyrantel Pamoate ( Pyrantel Embonate). See the species affected, top reactions, and outcomes below.

155
adverse-event reports
11.6%
death-coded share
Dog
most-reported species
29
Lack of efficacy (endoparasite) - hookworm - 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.
155
Total Reports
18
Deaths Reported
11.6%
Death Rate

Active Ingredients

Pyrantel Pamoate ( Pyrantel Embonate)

Administration Routes

OralUnknownSubcutaneousTopical

Species Affected

Dog 110
Cat 19
Unknown 15
Horse 9
Sheep 1
Cattle 1

Most Affected Breeds

Unknown 15
Domestic Shorthair 14
Retriever - Labrador 9
Shih Tzu 8
Retriever - Golden 6
Dog (unknown) 6
Chihuahua 6
Shepherd Dog - German 5
Crossbred Canine/dog 5
Terrier (unspecified) 5

Most Reported Reactions

Lack of efficacy (endoparasite) - hookworm 29
Lethargy (see also Central nervous system depression in 'Neurological') 27
INEFFECTIVE, ASCARIDS NOS 22
Death 16
Vomiting 16
Anorexia 15
Anaphylactoid reaction 14
Diarrhoea 12
Emesis 10
Lack of efficacy - NOS 9
Suspension, Abnormal 8
Drug administration error 8

Outcome Breakdown

Ongoing
73 (49.0%)
Outcome Unknown
33 (22.1%)
Recovered/Normal
25 (16.8%)
Died
16 (10.7%)
Euthanized
2 (1.3%)

Pyrantel Pamoate ( Pyrantel Embonate) Adverse Event Insights

155 reports name Pyrantel Pamoate ( Pyrantel Embonate); 18 recorded a death outcome (11.6% of reported events, not a population-level mortality rate). Active ingredient: Pyrantel Pamoate ( Pyrantel Embonate). Administration routes: Oral, Unknown, Subcutaneous, Topical.

By species: Dog (110 reports), Cat (19 reports), Unknown (15 reports). By breed: Unknown (15), Domestic Shorthair (14), Retriever - Labrador (9).

Leading clinical signs: Lack of efficacy (endoparasite) - hookworm (29), Lethargy (see also Central nervous system depression in 'Neurological') (27), INEFFECTIVE, ASCARIDS NOS (22), Death (16). Outcome, 149 coded reports: Ongoing leads at 49.0%.

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.