Reaction profile

The FDA adverse-event record for wrong strength dispensed

80 FDA adverse-event reports reference wrong strength dispensed (VeDDRA 93079). See the species, breeds, and drugs most associated with it below.

80
reports citing this reaction
3.8%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
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80
Total Reports
3
Deaths
3.8%
Death Rate

Species Most Affected

Dog 73
Cat 5
Unknown 2

Breeds Most Affected

Chihuahua 8
Dog (unknown) 7
Terrier - Yorkshire 5
Shih Tzu 5
Spitz - German Pomeranian 4
Unknown 3
Maltese 3
Collie - Border 3
Terrier (unspecified) 3
Retriever - Labrador 3

Associated Drugs

Milbemycin Oxime + Spinosad 15
Fluralaner 13.64% 12-Week Chew 12
Fluralaner Chew Tablets 8
Levothyroxine Sodium 7
Ivermectin + Pyrantel As Pamoate Salt 5
Lotilaner 4
Levothyroxine Sodium, Usp 4
Pimobendan 3
Spinosad 3
Oclacitinib Maleate 3
Trilostane 3
Carprofen 3
Fluoxetine 3
Meloxicam 2
Firocoxib 2
Grapiprant 2
Fluralaner Spot-On Solution 2
Prednisone 2
Sarolaner 2
Fluralaner/Moxidectin Spot-On 2

Wrong strength dispensed Reaction Insights

80 reports name Wrong strength dispensed; 3 recorded a death outcome (3.8% of reported events, not a population-level mortality rate). VeDDRA code: 93079.

By species: Dog (73 reports), Cat (5 reports), Unknown (2 reports). By breed: Chihuahua (8), Dog (unknown) (7), Terrier - Yorkshire (5).

Most co-reported drugs: Milbemycin Oxime + Spinosad (15 reports), Fluralaner 13.64% 12-Week Chew (12 reports), Fluralaner Chew Tablets (8 reports), Levothyroxine Sodium (7 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.