Reaction profile
The FDA adverse-event record for underdose
10,755 FDA adverse-event reports reference underdose (VeDDRA 3037). See the species, breeds, and drugs most associated with it below.
- 10,755
- reports citing this reaction
- 4.7%
- death-coded share
- Dog
- most-affected species
- Trilostane
- most-associated drug
Species Most Affected
Breeds Most Affected
Associated Drugs
Underdose Reaction Insights
10,755 reports name Underdose; 509 recorded a death outcome (4.7% of reported events, not a population-level mortality rate). VeDDRA code: 3037.
By species: Dog (9,455 reports), Cat (1,072 reports), Horse (130 reports). By breed: Retriever - Labrador (1,175), Crossbred Canine/dog (728), Domestic Shorthair (589).
Most co-reported drugs: Trilostane (1,901 reports), Ivermectin + Pyrantel As Pamoate Salt (1,546 reports), Milbemycin Oxime + Spinosad (965 reports), Spinosad (563 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.