Drug profile

The FDA adverse-event record for Unknown Ivermectin

32 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Unknown Ivermectin. See the species affected, top reactions, and outcomes below.

32
adverse-event reports
0.0%
death-coded share
Dog
most-reported species
31
Lack of efficacy (endoparasite) - heartworm - top reaction
Verify with FDA CVM →
Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
32
Total Reports
0
Deaths Reported
0.0%
Death Rate

Active Ingredients

Unknown Ivermectin

Administration Routes

UnknownOral

Species Affected

Dog 32

Most Affected Breeds

Retriever - Labrador 9
Cattle Dog - Australian (blue heeler, red heeler, Queensland cattledog) 3
Shepherd Dog - German 2
Crossbred Canine/dog 2
Pointer (unspecified) 2
Boxer (German Boxer) 1
Bulldog 1
Spaniel (unspecified) 1
Saint Bernard Dog 1
Schnauzer - Miniature 1

Most Reported Reactions

Lack of efficacy (endoparasite) - heartworm 31
Vomiting 2
Diarrhoea 2
Decreased appetite 2
Elevated alanine aminotransferase (ALT) 2
Elevated total bilirubin 2
Lack of efficacy (heartworm) 1
HEMATOCRIT(HCT) HIGH, BLOOD 1
Increased percentage reticulocytes 1
Weight gain 1
Overdose 1

Outcome Breakdown

Outcome Unknown
20 (62.5%)
Recovered with Sequela
6 (18.8%)
Ongoing
6 (18.8%)

Unknown Ivermectin Adverse Event Insights

32 reports name Unknown Ivermectin; 0 recorded a death outcome (0.0% of reported events, not a population-level mortality rate). Active ingredient: Unknown Ivermectin. Administration routes: Unknown, Oral.

By species: Dog (32 reports). By breed: Retriever - Labrador (9), Cattle Dog - Australian (blue heeler, red heeler, Queensland cattledog) (3), Shepherd Dog - German (2).

Leading clinical signs: Lack of efficacy (endoparasite) - heartworm (31), Vomiting (2), Diarrhoea (2), Decreased appetite (2). Outcome, 32 coded reports: Outcome Unknown leads at 62.5%.

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.