Reaction profile

The FDA adverse-event record for heart valve disorder

193 FDA adverse-event reports reference heart valve disorder (VeDDRA 1515). See the species, breeds, and drugs most associated with it below.

193
reports citing this reaction
40.9%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
193
Total Reports
79
Deaths
40.9%
Death Rate

Species Most Affected

Dog 184
Cat 7
Cattle 2

Breeds Most Affected

Retriever - Labrador 16
Chihuahua 15
Crossbred Canine/dog 13
Retriever - Golden 9
Shepherd Dog - German 7
Dachshund (unspecified) 7
Shih Tzu 7
Terrier (unspecified) 6
Spitz - German Pomeranian 5
Spaniel - King Charles Cavalier 5

Associated Drugs

Milbemycin Oxime + Spinosad 46
Trilostane 17
Pimobendan 14
Moxidectin 13
Spinosad 12
Fluralaner Chew Tablets 12
Afoxolaner 12
Carprofen 11
Bedinvetmab 11
Ivermectin + Pyrantel As Pamoate Salt 9
Fluralaner 13.64% 12-Week Chew 9
Oclacitinib Maleate 8
Prednisone 7
Tramadol 6
Doxycycline 6
Buprenorphine 6
Gabapentin 6
Milbemycin Oxime + Praziquantel 6
Rabies Vaccine 5
Maropitant Citrate 5

Heart valve disorder Reaction Insights

193 reports name Heart valve disorder; 79 recorded a death outcome (40.9% of reported events, not a population-level mortality rate). VeDDRA code: 1515.

By species: Dog (184 reports), Cat (7 reports), Cattle (2 reports). By breed: Retriever - Labrador (16), Chihuahua (15), Crossbred Canine/dog (13).

Most co-reported drugs: Milbemycin Oxime + Spinosad (46 reports), Trilostane (17 reports), Pimobendan (14 reports), Moxidectin (13 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.