Drug profile

The FDA adverse-event record for Ivermectin, Pyrantel Pamoate, Praziquantel

854 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Ivermectin, Pyrantel Pamoate, Praziquantel. See the species affected, top reactions, and outcomes below.

854
adverse-event reports
3.2%
death-coded share
Dog
most-reported species
255
Vomiting - 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.
854
Total Reports
27
Deaths Reported
3.2%
Death Rate

Active Ingredients

Ivermectin, Pyrantel Pamoate, Praziquantel

Administration Routes

OralUnknownIntrauterineTopical

Species Affected

Dog 807
Unknown 40
Human 5
Cat 1
Rabbit 1

Most Affected Breeds

Crossbred Canine/dog 103
Retriever - Labrador 91
Dog (unknown) 68
Unknown 45
Shepherd Dog - German 40
Terrier - Yorkshire 33
Retriever - Golden 32
Chihuahua 30
Shih Tzu 29
Poodle (unspecified) 23

Most Reported Reactions

Vomiting 255
INEFFECTIVE, HEARTWORM LARVAE 203
INEFFECTIVE, ASCARIDS NOS 84
Lack of efficacy (endoparasite) - hookworm 84
Depression 81
Diarrhoea 62
Lack of efficacy (endoparasite) - tapeworm 53
Underfilling, Package 32
Anorexia 30
Accidental exposure 29
Convulsion 20
Lack of efficacy (endoparasite) - heartworm 18

Outcome Breakdown

Outcome Unknown
32 (47.8%)
Died
27 (40.3%)
Recovered/Normal
5 (7.5%)
Ongoing
3 (4.5%)

Ivermectin, Pyrantel Pamoate, Praziquantel Adverse Event Insights

854 reports name Ivermectin, Pyrantel Pamoate, Praziquantel; 27 recorded a death outcome (3.2% of reported events, not a population-level mortality rate). Active ingredient: Ivermectin, Pyrantel Pamoate, Praziquantel. Administration routes: Oral, Unknown, Intrauterine, Topical.

By species: Dog (807 reports), Unknown (40 reports), Human (5 reports). By breed: Crossbred Canine/dog (103), Retriever - Labrador (91), Dog (unknown) (68).

Leading clinical signs: Vomiting (255), INEFFECTIVE, HEARTWORM LARVAE (203), INEFFECTIVE, ASCARIDS NOS (84), Lack of efficacy (endoparasite) - hookworm (84). Outcome, 67 coded reports: Outcome Unknown leads at 47.8%.

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.