Drug profile

The FDA adverse-event record for Praziquantel + Pyrantel Pamoate

1,650 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Praziquantel + Pyrantel Pamoate. See the species affected, top reactions, and outcomes below.

1,650
adverse-event reports
5.5%
death-coded share
Dog
most-reported species
673
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.
1,650
Total Reports
91
Deaths Reported
5.5%
Death Rate

Active Ingredients

PraziquantelPraziquantel + Pyrantel PamoatePyrantel Pamoate

Administration Routes

OralUnknownTopicalOphthalmic

Species Affected

Dog 1,516
Cat 67
Unknown 52
Human 14
Cattle 1

Most Affected Breeds

Dog (unknown) 233
Pit Bull 174
Chihuahua 139
Retriever - Labrador 104
Crossbred Canine/dog 70
Unknown 67
Shepherd Dog - German 60
Terrier - Yorkshire 51
Shih Tzu 50
Domestic Shorthair 46

Most Reported Reactions

Vomiting 673
Lethargy (see also Central nervous system depression in 'Neurological') 310
Diarrhoea 247
Not eating 140
Emesis 109
Emesis (multiple) 93
Lethargy (see also Central nervous system depression in Neurological) 86
Bloody diarrhoea 84
Drug administration error 82
Anorexia 77
Behavioural disorder NOS 75
Death 75

Outcome Breakdown

Outcome Unknown
900 (56.3%)
Recovered/Normal
574 (35.9%)
Died
81 (5.1%)
Ongoing
23 (1.4%)
Recovered with Sequela
11 (0.7%)
Euthanized
10 (0.6%)

Praziquantel + Pyrantel Pamoate Adverse Event Insights

1,650 reports name Praziquantel + Pyrantel Pamoate; 91 recorded a death outcome (5.5% of reported events, not a population-level mortality rate). Active ingredients: Praziquantel, Praziquantel + Pyrantel Pamoate, Pyrantel Pamoate. Administration routes: Oral, Unknown, Topical, Ophthalmic.

By species: Dog (1,516 reports), Cat (67 reports), Unknown (52 reports). By breed: Dog (unknown) (233), Pit Bull (174), Chihuahua (139).

Leading clinical signs: Vomiting (673), Lethargy (see also Central nervous system depression in 'Neurological') (310), Diarrhoea (247), Not eating (140). Outcome, 1,599 coded reports: Outcome Unknown leads at 56.3%.

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.