Drug profile

The FDA adverse-event record for Sulfa

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

10
adverse-event reports
30.0%
death-coded share
Dog
most-reported species
3
Death - 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.
10
Total Reports
3
Deaths Reported
30.0%
Death Rate

Active Ingredients

Sulfa

Administration Routes

UnknownOral

Species Affected

Dog 8
Cattle 2

Most Affected Breeds

Siberian Husky 2
Retriever - Labrador 1
Shepherd Dog - German 1
Pinscher - Miniature 1
Boxer (German Boxer) 1
Shar Pei 1
Cattle (other) 1
Dachshund (unspecified) 1
Aberdeen Angus 1

Most Reported Reactions

Death 3
Weight loss 3
Skin lesion NOS 3
Abnormal cytology 3
Vomiting 2
Anorexia 2
Lack of efficacy - NOS 2
Erythema (for urticaria see Immune SOC) 2
Moist dermatitis 2
Diarrhoea 2
Alopecia general 2
Dermal thickening 2

Outcome Breakdown

Ongoing
6 (54.5%)
Died
3 (27.3%)
Outcome Unknown
2 (18.2%)

Sulfa Adverse Event Insights

10 reports name Sulfa; 3 recorded a death outcome (30.0% of reported events, not a population-level mortality rate). Active ingredient: Sulfa. Administration routes: Unknown, Oral.

By species: Dog (8 reports), Cattle (2 reports). By breed: Siberian Husky (2), Retriever - Labrador (1), Shepherd Dog - German (1).

Leading clinical signs: Death (3), Weight loss (3), Skin lesion NOS (3), Abnormal cytology (3). Outcome, 11 coded reports: Ongoing leads at 54.5%.

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.