Drug profile

The FDA adverse-event record for Unknown Steroid

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

43
adverse-event reports
11.6%
death-coded share
Dog
most-reported species
4
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.
43
Total Reports
5
Deaths Reported
11.6%
Death Rate

Active Ingredients

Unknown Steroid

Administration Routes

UnknownOralSubcutaneousParenteral

Species Affected

Dog 23
Cat 19
Human 1

Most Affected Breeds

Domestic Shorthair 13
Retriever - Labrador 7
Crossbred Canine/dog 2
Domestic Longhair 2
Cat (unknown) 2
Dog (unknown) 2
Shepherd Dog - German 2
Foxhound - English 1
Unknown 1
Havanese 1

Most Reported Reactions

Lethargy (see also Central nervous system depression in 'Neurological') 4
Weight loss 4
Anorexia 4
Diarrhoea 4
Skin lesion NOS 3
Application site erythema 3
Twitching 3
Application site alopecia 3
Pruritus 3
Underdose 3
Vomiting 3
Facial swelling (see also 'Skin') 3

Outcome Breakdown

Recovered/Normal
20 (46.5%)
Outcome Unknown
16 (37.2%)
Died
3 (7.0%)
Ongoing
2 (4.7%)
Euthanized
2 (4.7%)

Unknown Steroid Adverse Event Insights

43 reports name Unknown Steroid; 5 recorded a death outcome (11.6% of reported events, not a population-level mortality rate). Active ingredient: Unknown Steroid. Administration routes: Unknown, Oral, Subcutaneous, Parenteral.

By species: Dog (23 reports), Cat (19 reports), Human (1 reports). By breed: Domestic Shorthair (13), Retriever - Labrador (7), Crossbred Canine/dog (2).

Leading clinical signs: Lethargy (see also Central nervous system depression in 'Neurological') (4), Weight loss (4), Anorexia (4), Diarrhoea (4). Outcome, 43 coded reports: Recovered/Normal leads at 46.5%.

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.