Drug profile

The FDA adverse-event record for Unknown Medication

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

676
adverse-event reports
13.8%
death-coded share
Dog
most-reported species
119
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.
676
Total Reports
93
Deaths Reported
13.8%
Death Rate

Active Ingredients

Unknown Medication

Administration Routes

UnknownOralParenteralTopicalSubcutaneousIntravenousAuricular (Otic)OtherIntradermalIntramammary

Species Affected

Dog 434
Cat 192
Human 37
Cattle 8
Pig 2
Chicken 1
Cephalopoda 1
Horse 1

Most Affected Breeds

Domestic Shorthair 105
Retriever - Labrador 52
Cat (unknown) 41
Dog (unknown) 39
Unknown 37
Chihuahua 23
Crossbred Canine/dog 20
Shih Tzu 20
Retriever - Golden 19
Shepherd Dog - German 16

Most Reported Reactions

Vomiting 119
Behavioural disorder NOS 67
Death by euthanasia 55
Diarrhoea 54
Not eating 54
Lethargy (see also Central nervous system depression in Neurological) 46
Other abnormal test result NOS 45
Lethargy (see also Central nervous system depression in 'Neurological') 44
Lack of efficacy - NOS 40
Death 40
Lack of efficacy (ectoparasite) - flea 36
Elevated alanine aminotransferase (ALT) 31

Outcome Breakdown

Outcome Unknown
257 (37.3%)
Recovered/Normal
172 (25.0%)
Ongoing
159 (23.1%)
Euthanized
55 (8.0%)
Died
40 (5.8%)
Recovered with Sequela
6 (0.9%)

Unknown Medication Adverse Event Insights

676 reports name Unknown Medication; 93 recorded a death outcome (13.8% of reported events, not a population-level mortality rate). Active ingredient: Unknown Medication. Administration routes: Unknown, Oral, Parenteral, Topical.

By species: Dog (434 reports), Cat (192 reports), Human (37 reports). By breed: Domestic Shorthair (105), Retriever - Labrador (52), Cat (unknown) (41).

Leading clinical signs: Vomiting (119), Behavioural disorder NOS (67), Death by euthanasia (55), Diarrhoea (54). Outcome, 689 coded reports: Outcome Unknown leads at 37.3%.

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.