Drug profile

The FDA adverse-event record for Optimmune

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

35
adverse-event reports
14.3%
death-coded share
Dog
most-reported species
9
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.
35
Total Reports
5
Deaths Reported
14.3%
Death Rate

Active Ingredients

Optimmune

Administration Routes

UnknownOphthalmicTopical

Species Affected

Dog 35

Most Affected Breeds

Shih Tzu 7
Terrier - Yorkshire 5
Shepherd Dog - German 4
Schnauzer - Miniature 3
Maltese 2
Dachshund (unspecified) 2
Terrier - West Highland White 2
Chow Chow 2
Terrier (unspecified) 2
Bulldog - English 2

Most Reported Reactions

Vomiting 9
Seizure NOS 6
Diarrhoea 5
Death by euthanasia 5
Bloody diarrhoea 5
Weakness 4
Inappropriate urination 4
Ataxia 3
Vocalisation 3
Not eating 3
Incoordination 2
Shaking 2

Outcome Breakdown

Ongoing
16 (45.7%)
Recovered/Normal
7 (20.0%)
Outcome Unknown
6 (17.1%)
Euthanized
5 (14.3%)
Recovered with Sequela
1 (2.9%)

Optimmune Adverse Event Insights

35 reports name Optimmune; 5 recorded a death outcome (14.3% of reported events, not a population-level mortality rate). Active ingredient: Optimmune. Administration routes: Unknown, Ophthalmic, Topical.

By species: Dog (35 reports). By breed: Shih Tzu (7), Terrier - Yorkshire (5), Shepherd Dog - German (4).

Leading clinical signs: Vomiting (9), Seizure NOS (6), Diarrhoea (5), Death by euthanasia (5). Outcome, 35 coded reports: Ongoing leads at 45.7%.

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.