Drug profile

The FDA adverse-event record for Ivermectin + Pyrantel Pamoate

2,889 FDA reports name Ivermectin + Pyrantel Pamoate, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#78 of 2,679
by report volume (all drugs)
2,889
adverse-event reports
2.4%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Ivermectin + Pyrantel Pamoate ranks #78 of 2679 by total reports (2,889) and #960 of 1130 by death-coded share (2.4%). 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)
#78
This drug, reports of 2679
#960
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. Ivermectin + Pyrantel Pamoate has 2,889 reports now versus 2,853 in that prior snapshot: 36 more (1.3%).

Report change
+36
Death-coded reports
+1
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 Ivermectin + Pyrantel Pamoate changes

Signature read: 2,889 reports place Ivermectin + Pyrantel Pamoate in the upper third of FDA AER volume (#78 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.
2,889
Total Reports
69
Deaths Reported
2.4%
Death-coded share of reports

Active Ingredients

IvermectinIvermectin + Pyrantel PamoatePyrantel Pamoate

Administration Routes

OralUnknownTopicalOphthalmicIntrauterine

Species Affected

Dog 2,829
Unknown 57
Human 3

Most Affected Breeds

Retriever - Labrador 386
Shepherd Dog - German 166
Crossbred Canine/dog 129
Chihuahua 123
Terrier - Yorkshire 99
Pit Bull 98
Dog (unknown) 92
Retriever - Golden 87
Shih Tzu 84
Boxer (German Boxer) 73

Most Reported Reactions

Lack of efficacy (endoparasite) - heartworm 823
Emesis 577
Vomiting 398
Lethargy (see also Central nervous system depression in 'Neurological') 224
Lack of efficacy (ectoparasite) - flea 155
Diarrhoea 141
Seizure NOS 96
INEFFECTIVE, HEARTWORM LARVAE 87
Other abnormal test result NOS 81
Not eating 72
Lack of efficacy - NOS 70
Behavioural disorder NOS 66

Outcome Breakdown

Outcome Unknown
1,324 (46.7%)
Recovered/Normal
1,104 (39.0%)
Ongoing
203 (7.2%)
Recovered with Sequela
133 (4.7%)
Died
35 (1.2%)
Euthanized
34 (1.2%)

Ivermectin + Pyrantel Pamoate: low death-coded share 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 Ivermectin + Pyrantel Pamoate, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

What to do with this drug

  • Compare Ivermectin + Pyrantel Pamoate's report volume and death-coded share against similar drugs nationwide. See similar drugs
  • Read how death-coded share differs from a mortality rate before drawing conclusions. Understanding adverse events
  • Browse the full drug directory to compare report counts across products. All drugs

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 Ivermectin + Pyrantel Pamoate (#78 of 2,679 by report volume); death-coded 2.4%. PlainBreed drug row · report volume stamp 2,889 · 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 →