Drug profile

The FDA adverse-event record for Vitamin E

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

132
adverse-event reports
18.2%
death-coded share
Dog
most-reported species
17
Lethargy (see also Central nervous system depression in 'Neurological') - 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.
132
Total Reports
24
Deaths Reported
18.2%
Death Rate

Active Ingredients

Vitamin E

Administration Routes

UnknownOralTopicalOphthalmic

Species Affected

Dog 100
Pig 11
Horse 10
Cat 5
Cattle 2
Human 2
Goat 2

Most Affected Breeds

Retriever - Labrador 15
Retriever - Golden 9
Shepherd Dog - German 7
Crossbred Canine/dog 7
Shepherd Dog - Australian 4
Domestic Shorthair 3
Terrier - Yorkshire 3
Deutsche Dogge, Great Dane 3
Crossbred Porcine/Pig 3
Dachshund (unspecified) 3

Most Reported Reactions

Lethargy (see also Central nervous system depression in 'Neurological') 17
Death by euthanasia 16
Vomiting 15
Diarrhoea 13
Emesis 11
Elevated liver enzymes 10
Elevated alanine aminotransferase (ALT) 10
Seizure NOS 10
Decreased appetite 9
Death 8
Behavioural disorder NOS 8
Weight loss 8

Outcome Breakdown

Recovered/Normal
38 (27.0%)
Outcome Unknown
36 (25.5%)
Ongoing
34 (24.1%)
Euthanized
19 (13.5%)
Died
8 (5.7%)
Recovered with Sequela
6 (4.3%)

Vitamin E Adverse Event Insights

132 reports name Vitamin E; 24 recorded a death outcome (18.2% of reported events, not a population-level mortality rate). Active ingredient: Vitamin E. Administration routes: Unknown, Oral, Topical, Ophthalmic.

By species: Dog (100 reports), Pig (11 reports), Horse (10 reports). By breed: Retriever - Labrador (15), Retriever - Golden (9), Shepherd Dog - German (7).

Leading clinical signs: Lethargy (see also Central nervous system depression in 'Neurological') (17), Death by euthanasia (16), Vomiting (15), Diarrhoea (13). Outcome, 141 coded reports: Recovered/Normal leads at 27.0%.

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.