Drug profile

The FDA adverse-event record for Advantage Multi

58 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Advantage Multi. See the species affected, top reactions, and outcomes below.

58
adverse-event reports
5.2%
death-coded share
Dog
most-reported species
41
Lack of efficacy (endoparasite) - heartworm - 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.
58
Total Reports
3
Deaths Reported
5.2%
Death Rate

Active Ingredients

Advantage Multi

Administration Routes

TopicalUnknownOral

Species Affected

Dog 54
Cat 4

Most Affected Breeds

Retriever - Labrador 6
Chihuahua 5
Crossbred Canine/dog 4
Boxer (German Boxer) 2
Siberian Husky 2
Black Mouth Cur 2
Terrier (unspecified) 2
Retriever - Golden 2
Shepherd Dog - Australian 2
Greyhound 2

Most Reported Reactions

Lack of efficacy (endoparasite) - heartworm 41
Overdose 4
Decreased appetite 4
Elevated total bilirubin 4
Weight loss 4
Anaemia NOS 3
Neutropenia 3
Lymphopenia 3
Hypoproteinaemia 3
Anxiety 2
Other abnormal test result NOS 2
Drug dose administration interval too long 2

Outcome Breakdown

Ongoing
41 (70.7%)
Outcome Unknown
13 (22.4%)
Died
2 (3.4%)
Euthanized
1 (1.7%)
Recovered/Normal
1 (1.7%)

Advantage Multi Adverse Event Insights

58 reports name Advantage Multi; 3 recorded a death outcome (5.2% of reported events, not a population-level mortality rate). Active ingredient: Advantage Multi. Administration routes: Topical, Unknown, Oral.

By species: Dog (54 reports), Cat (4 reports). By breed: Retriever - Labrador (6), Chihuahua (5), Crossbred Canine/dog (4).

Leading clinical signs: Lack of efficacy (endoparasite) - heartworm (41), Overdose (4), Decreased appetite (4), Elevated total bilirubin (4). Outcome, 58 coded reports: Ongoing leads at 70.7%.

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.