Reaction profile

The FDA adverse-event record for decreased respiratory rate

171 FDA adverse-event reports reference decreased respiratory rate (VeDDRA 834). See the species, breeds, and drugs most associated with it below.

171
reports citing this reaction
31.0%
death-coded share
Dog
most-affected species
Isoflurane
most-associated drug
Verify with FDA CVM →
171
Total Reports
53
Deaths
31.0%
Death Rate

Species Most Affected

Dog 123
Cat 40
Mouse 2
Horse 2
Pig 1
Rabbit 1
Sheep 1
Monkey 1

Breeds Most Affected

Domestic Shorthair 23
Dog (unknown) 11
Crossbred Canine/dog 8
Cat (unknown) 7
Chihuahua 7
Boxer (German Boxer) 7
Shepherd Dog - German 7
Retriever - Labrador 6
Spitz - German Pomeranian 5
Shih Tzu 4

Associated Drugs

Isoflurane 30
Dexmedetomidine Hydrochloride 25
Buprenorphine 19
Milbemycin Oxime + Spinosad 18
Maropitant Citrate 14
Butorphanol Tartrate 12
Ketamine 11
Propofol 11
Atipamezole Hydrochloride 10
Acepromazine 10
Moxidectin 9
Epinephrine 8
Dexmedetomidine 8
Spinosad 7
Cefovecin 7
Gabapentin 7
Methimazole 7
Bedinvetmab 7
Butorphanol 6
Diazepam 6

Decreased respiratory rate Reaction Insights

171 reports name Decreased respiratory rate; 53 recorded a death outcome (31.0% of reported events, not a population-level mortality rate). VeDDRA code: 834.

By species: Dog (123 reports), Cat (40 reports), Mouse (2 reports). By breed: Domestic Shorthair (23), Dog (unknown) (11), Crossbred Canine/dog (8).

Most co-reported drugs: Isoflurane (30 reports), Dexmedetomidine Hydrochloride (25 reports), Buprenorphine (19 reports), Milbemycin Oxime + Spinosad (18 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.