Drug profile

The FDA adverse-event record for Pyrantel Tartrate

178 FDA reports name Pyrantel Tartrate, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#568 of 2,679
by report volume (all drugs)
178
adverse-event reports
9.6%
death-coded share
Horse
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Pyrantel Tartrate ranks #567 of 2679 by total reports (178) and #560 of 1130 by death-coded share (9.6%). National dual: Milbemycin Oxime + Spinosad is #1 of 2679 drugs by total adverse-event reports (149,624) at death-coded-share rank 965 of 1130 drugs with at least 50 reports (2.3%); separately, Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) is #1 highest death-coded share at 97.8% (report rank #821).

149,624
Milbemycin Oxime + Spinosad reports (#1)
97.8%
Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) death share (#1)
#567
This drug, reports of 2679
#560
This drug, death share of 1130

Report volume reflects how common a breed or drug is and how often owners and vets file — not actual risk. Death-coded share ranks are limited to entries with enough reports to be meaningful. The two maps do not agree at #1.

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Pyrantel Tartrate has 178 reports now versus 178 in that prior snapshot: 0 the same number of (0.0%).

Report change
+0
Death-coded reports
+0
Death-coded share
−0.0 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Pyrantel Tartrate changes

Signature read: 178 reports place Pyrantel Tartrate in the upper third of FDA AER volume (#568 of 2,679).

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-coded share of reports

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
Weight loss 8
Abdominal pain 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: high report volume in the FDA AER row

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.

High-volume nationwide drug peers

Two openFDA-derived peer sets for Pyrantel Tartrate, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

What to do with this drug

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Pyrantel Tartrate (#568 of 2,679 by report volume); death-coded 9.6%. PlainBreed drug row · report volume stamp 178 · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →