Drug profile

The FDA adverse-event record for Praziquantel/Pyrantel Pamoate/Febantel

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

268
adverse-event reports
5.2%
death-coded share
Dog
most-reported species
71
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.
268
Total Reports
14
Deaths Reported
5.2%
Death Rate

Active Ingredients

Praziquantel/Pyrantel Pamoate/Febantel

Administration Routes

OralUnknownTopicalOther

Species Affected

Dog 262
Unknown 3
Cat 2
Human 1

Most Affected Breeds

Dog (unknown) 58
Chihuahua 24
Crossbred Canine/dog 17
Retriever - Labrador 15
Mixed (Dog) 12
Shih Tzu 10
Shepherd Dog - German 9
Retriever - Golden 9
Terrier - Yorkshire 7
Boxer (German Boxer) 7

Most Reported Reactions

Vomiting 71
Diarrhoea 47
Emesis (multiple) 40
Emesis 32
Anorexia 27
Lethargy (see also Central nervous system depression in 'Neurological') 26
Loose stool 16
Lack of efficacy (endoparasite) - tapeworm 15
Underdose 13
Death 11
Behavioural disorder NOS 10
INEFFECTIVE, WORMS 9

Outcome Breakdown

Outcome Unknown
146 (55.3%)
Recovered/Normal
100 (37.9%)
Died
11 (4.2%)
Ongoing
4 (1.5%)
Euthanized
3 (1.1%)

Praziquantel/Pyrantel Pamoate/Febantel Adverse Event Insights

268 reports name Praziquantel/Pyrantel Pamoate/Febantel; 14 recorded a death outcome (5.2% of reported events, not a population-level mortality rate). Active ingredient: Praziquantel/Pyrantel Pamoate/Febantel. Administration routes: Oral, Unknown, Topical, Other.

By species: Dog (262 reports), Unknown (3 reports), Cat (2 reports). By breed: Dog (unknown) (58), Chihuahua (24), Crossbred Canine/dog (17).

Leading clinical signs: Vomiting (71), Diarrhoea (47), Emesis (multiple) (40), Emesis (32). Outcome, 264 coded reports: Outcome Unknown leads at 55.3%.

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.