Reaction profile

The FDA adverse-event record for priapism

10 FDA adverse-event reports reference priapism (VeDDRA 801). See the species, breeds, and drugs most associated with it below.

10
reports citing this reaction
10.0%
death-coded share
Dog
most-affected species
Acepromazine Maleate
most-associated drug
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10
Total Reports
1
Deaths
10.0%
Death Rate

Species Most Affected

Dog 6
Horse 4

Breeds Most Affected

Boxer (German Boxer) 1
Mastiff 1
Retriever (unspecified) 1
Greyhound - Italian 1
Thoroughbred 1
Chihuahua 1
Horse (unknown) 1
Bulldog - American 1
Paint 1
Horse (other) 1

Associated Drugs

Acepromazine Maleate 2
Detomidine Hydrochloride 2
Pimobendan 1
Prednisolone, Trimeprazine Tartrate 1
Fluoxetine Hydrochloride 1
Dexmedetomidine Hydrochloride 1
Isoflurane 1
Hydromorphone Hcl 1
Ketamine 1
Diazepam 1
Diphenhydramine Hcl 1
Prednisolone; Trimeprazine Tartrate 1
Pergolide Mesylate 1
Mercaptobenzothiazole 1

Priapism Reaction Insights

10 reports name Priapism; 1 recorded a death outcome (10.0% of reported events, not a population-level mortality rate). VeDDRA code: 801.

By species: Dog (6 reports), Horse (4 reports). By breed: Boxer (German Boxer) (1), Mastiff (1), Retriever (unspecified) (1).

Most co-reported drugs: Acepromazine Maleate (2 reports), Detomidine Hydrochloride (2 reports), Pimobendan (1 reports), Prednisolone, Trimeprazine Tartrate (1 reports).

Read these counts as reporting volume, not risk: per our methodology, co-reporting reflects temporal association captured in voluntary submissions, not proof that a drug caused this reaction. A widely-prescribed drug will rack up more raw co-reports at an identical true rate than a rarely-used one, so compare within similar-exposure products.

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.