Reaction profile

The FDA adverse-event record for exercise intolerance

286 FDA adverse-event reports reference exercise intolerance (VeDDRA 1042). See the species, breeds, and drugs most associated with it below.

286
reports citing this reaction
15.7%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
286
Total Reports
45
Deaths
15.7%
Death Rate

Species Most Affected

Dog 277
Horse 4
Cat 2
Human 1
Other Canids 1
Cattle 1

Breeds Most Affected

Retriever - Labrador 43
Crossbred Canine/dog 22
Shepherd Dog - German 19
Retriever - Golden 12
Shih Tzu 11
Chihuahua 10
Terrier - Yorkshire 7
Terrier (unspecified) 7
Dog (unknown) 7
Beagle 6

Associated Drugs

Milbemycin Oxime + Spinosad 47
Oclacitinib Maleate 21
Ivermectin + Pyrantel As Pamoate Salt 20
Trilostane 14
Carprofen 14
Afoxolaner 14
Bedinvetmab 14
Moxidectin 13
Melarsomine Dihydrochloride Injection 11
Pyrantel Pamoate;Sarolaner 11
Melarsomine Dihydrochloride 10
Spinosad 10
Fluralaner Chew Tablets 9
Imidacloprid + Moxidectin 7
Pimobendan 7
Grapiprant 7
Prednisone 6
Gabapentin 6
Cyclosporine 5
Maropitant Citrate 5

Exercise intolerance Reaction Insights

286 reports name Exercise intolerance; 45 recorded a death outcome (15.7% of reported events, not a population-level mortality rate). VeDDRA code: 1042.

By species: Dog (277 reports), Horse (4 reports), Cat (2 reports). By breed: Retriever - Labrador (43), Crossbred Canine/dog (22), Shepherd Dog - German (19).

Most co-reported drugs: Milbemycin Oxime + Spinosad (47 reports), Oclacitinib Maleate (21 reports), Ivermectin + Pyrantel As Pamoate Salt (20 reports), Trilostane (14 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.