Drug profile

The FDA adverse-event record for Alfaxan

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

11
adverse-event reports
18.2%
death-coded share
Dog
most-reported species
3
Vomiting - 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.
11
Total Reports
2
Deaths Reported
18.2%
Death Rate

Active Ingredients

Alfaxan

Administration Routes

UnknownIntravenous

Species Affected

Dog 9
Cat 2

Most Affected Breeds

Retriever - Labrador 3
Domestic Longhair 1
Domestic Shorthair 1
Shepherd Dog - Australian 1
Retriever - Golden 1
Terrier (unspecified) 1
Shepherd Dog - German 1
Bulldog (unspecified) 1
Dog (other) 1

Most Reported Reactions

Vomiting 3
Anorexia 2
Low blood pressure 2
Hyperglycaemia 2
Weight loss 2
Elevated liver enzymes 1
Gastric dilation 1
Hyponatremia 1
Death by euthanasia 1
Pyloric ulcer 1
Gastric perforation 1
Other abnormal test result NOS 1

Outcome Breakdown

Recovered/Normal
7 (53.8%)
Outcome Unknown
3 (23.1%)
Euthanized
1 (7.7%)
Ongoing
1 (7.7%)
Died
1 (7.7%)

Alfaxan Adverse Event Insights

11 reports name Alfaxan; 2 recorded a death outcome (18.2% of reported events, not a population-level mortality rate). Active ingredient: Alfaxan. Administration routes: Unknown, Intravenous.

By species: Dog (9 reports), Cat (2 reports). By breed: Retriever - Labrador (3), Domestic Longhair (1), Domestic Shorthair (1).

Leading clinical signs: Vomiting (3), Anorexia (2), Low blood pressure (2), Hyperglycaemia (2). Outcome, 13 coded reports: Recovered/Normal leads at 53.8%.

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.