Drug profile

The FDA adverse-event record for Ivermectin, Pyrantel Pamoate

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

#519 of 2,679
by report volume (all drugs)
220
adverse-event reports
5.5%
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 #519 of 2679 by total reports (220) and #763 of 1130 by death-coded share (5.5%). 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)
#519
This drug, reports of 2679
#763
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 220 reports now versus 220 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 Ivermectin, Pyrantel Pamoate changes

Signature read: 220 reports place Ivermectin, Pyrantel Pamoate in the upper third of FDA AER volume (#519 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.
220
Total Reports
12
Deaths Reported
5.5%
Death-coded share of reports

Active Ingredients

Ivermectin, Pyrantel Pamoate

Administration Routes

OralUnknown

Species Affected

Dog 218
Unknown 2

Most Affected Breeds

Retriever - Labrador 41
Shepherd Dog - German 12
Dog (unknown) 12
Crossbred Canine/dog 11
Boxer (German Boxer) 9
Terrier - Bull - American Pit 8
Terrier (unspecified) 7
Shih Tzu 6
Chihuahua 5
Beagle 5

Most Reported Reactions

Lack of efficacy (endoparasite) - heartworm 70
INEFFECTIVE, HEARTWORM LARVAE 51
Lack of efficacy - NOS 35
Lethargy (see also Central nervous system depression in 'Neurological') 21
Vomiting 19
Diarrhoea 17
Seizure NOS 11
Ataxia 8
Death 7
Anorexia 5
Death by euthanasia 5
Panting 5

Outcome Breakdown

Ongoing
136 (62.4%)
Outcome Unknown
41 (18.8%)
Recovered/Normal
29 (13.3%)
Died
7 (3.2%)
Euthanized
5 (2.3%)

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.

Similar report volume

Nearest other drugs by FDA report count (220 here).

Similar death-coded share

Nearest other drugs by death-coded share (5.5% here), distinct from the volume row.

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 (#519 of 2,679 by report volume); death-coded 5.5%. PlainBreed drug row · report volume stamp 220 · 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 →