Reaction profile

The FDA adverse-event record for pr-heart, lesion(s)

380 FDA adverse-event reports reference pr-heart, lesion(s) (VeDDRA 99619). See the species, breeds, and drugs most associated with it below.

380
reports citing this reaction
99.2%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
380
Total Reports
377
Deaths
99.2%
Death Rate

Species Most Affected

Dog 188
Cat 118
Cattle 53
Horse 9
Pig 4
Guinea Pig 2
Rabbit 2
Goat 1
Chicken 1
Sheep 1

Breeds Most Affected

Domestic (unspecified) 46
Domestic Shorthair 40
Crossbred Canine/dog 22
Retriever - Labrador 21
Holstein-Friesian also known as Holstein 15
Crossbred Bovine/Cattle 12
Cattle (unknown) 12
Chihuahua 12
Cat (unknown) 10
Cattle (other) 7

Associated Drugs

Milbemycin Oxime + Spinosad 30
Spinosad 26
Carprofen 25
Cefovecin Sodium 23
Cefovecin 20
Maropitant Citrate 20
Dexmedetomidine Hydrochloride 18
Selamectin 15
Moxidectin 15
Afoxolaner 14
Oclacitinib Maleate 13
Fluralaner Chew Tablets 13
Monensin 11
Deracoxib 10
Buprenorphine 10
Imidacloprid + Moxidectin 9
Isoflurane 9
Robenacoxib 9
Maropitant 8
Monensin Sodium 8

PR-HEART, LESION(S) Reaction Insights

380 reports name PR-HEART, LESION(S); 377 recorded a death outcome (99.2% of reported events, not a population-level mortality rate). VeDDRA code: 99619.

By species: Dog (188 reports), Cat (118 reports), Cattle (53 reports). By breed: Domestic (unspecified) (46), Domestic Shorthair (40), Crossbred Canine/dog (22).

Most co-reported drugs: Milbemycin Oxime + Spinosad (30 reports), Spinosad (26 reports), Carprofen (25 reports), Cefovecin Sodium (23 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.