Drug profile

The FDA adverse-event record for Pyrantel Tartrate

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

178
adverse-event reports
9.6%
death-coded share
Horse
most-reported species
20
INEFFECTIVE, STRONGYLES - 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.
178
Total Reports
17
Deaths Reported
9.6%
Death Rate

Active Ingredients

Pyrantel Tartrate

Administration Routes

OralUnknown

Species Affected

Horse 126
Unknown 43
Dog 4
Goat 2
Donkey 2
Rabbit 1

Most Affected Breeds

Unknown 46
Horse (unknown) 33
Quarter Horse 17
Thoroughbred 13
Horse (other) 6
Warmblood - Dutch 5
Paint 5
Warmblood (unspecified) 5
Mixed (Horse) 4
Arab 4

Most Reported Reactions

INEFFECTIVE, STRONGYLES 20
Seal, Abnormal 18
Accidental exposure 16
No sign 14
INEFFECTIVE, WORMS NOS 14
Containers, Abnormal 13
Colic 13
Death 12
Lack of efficacy - NOS 10
Abdominal pain 8
Weight loss 8
INEFFECTIVE, PARASITE(S) NOS 7

Outcome Breakdown

Outcome Unknown
28 (37.3%)
Recovered/Normal
19 (25.3%)
Died
14 (18.7%)
Ongoing
11 (14.7%)
Euthanized
3 (4.0%)

Pyrantel Tartrate Adverse Event Insights

178 reports name Pyrantel Tartrate; 17 recorded a death outcome (9.6% of reported events, not a population-level mortality rate). Active ingredient: Pyrantel Tartrate. Administration routes: Oral, Unknown.

By species: Horse (126 reports), Unknown (43 reports), Dog (4 reports). By breed: Unknown (46), Horse (unknown) (33), Quarter Horse (17).

Leading clinical signs: INEFFECTIVE, STRONGYLES (20), Seal, Abnormal (18), Accidental exposure (16), No sign (14). Outcome, 75 coded reports: Outcome Unknown leads at 37.3%.

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.