Drug profile

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

1,303 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Ivermectin + Praziquantel + Pyrantel Pamoate. See the species affected, top reactions, and outcomes below.

1,303
adverse-event reports
0.9%
death-coded share
Dog
most-reported species
394
Vomiting - 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.
1,303
Total Reports
12
Deaths Reported
0.9%
Death Rate

Active Ingredients

IvermectinPraziquantelPyrantel Pamoate

Administration Routes

OralUnknownIntra-Arterial

Species Affected

Dog 1,146
Unknown 155
Cat 2

Most Affected Breeds

Unknown 158
Retriever - Labrador 156
Shepherd Dog - German 82
Dog (unknown) 80
Pit Bull 66
Retriever - Golden 56
Chihuahua 50
Cattle Dog - Australian (blue heeler, red heeler, Queensland cattledog) 36
Terrier - Yorkshire 32
Crossbred Canine/dog 27

Most Reported Reactions

Vomiting 394
Lack of efficacy (endoparasite) - heartworm 393
Diarrhoea 118
Lethargy (see also Central nervous system depression in 'Neurological') 74
Tablets, Abnormal 71
INEFFECTIVE, HOOKS 65
Appearance, Abnormal 63
Containers, Damaged 58
Lack of efficacy (endoparasite) - hookworm 52
Overdose 36
Lack of efficacy (endoparasite) - roundworm NOS 32
Not eating 31

Outcome Breakdown

Outcome Unknown
654 (57.0%)
Recovered/Normal
458 (39.9%)
Ongoing
24 (2.1%)
Died
6 (0.5%)
Euthanized
6 (0.5%)

Ivermectin + Praziquantel + Pyrantel Pamoate Adverse Event Insights

1,303 reports name Ivermectin + Praziquantel + Pyrantel Pamoate; 12 recorded a death outcome (0.9% of reported events, not a population-level mortality rate). Active ingredients: Ivermectin, Praziquantel, Pyrantel Pamoate. Administration routes: Oral, Unknown, Intra-Arterial.

By species: Dog (1,146 reports), Unknown (155 reports), Cat (2 reports). By breed: Unknown (158), Retriever - Labrador (156), Shepherd Dog - German (82).

Leading clinical signs: Vomiting (394), Lack of efficacy (endoparasite) - heartworm (393), Diarrhoea (118), Lethargy (see also Central nervous system depression in 'Neurological') (74). Outcome, 1,148 coded reports: Outcome Unknown leads at 57.0%.

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.