Reaction profile

The FDA adverse-event record for ineffective, lungworms

87 FDA adverse-event reports reference ineffective, lungworms (VeDDRA 99126). See the species, breeds, and drugs most associated with it below.

87
reports citing this reaction
23.0%
death-coded share
Dog
most-affected species
Ivermectin + Pyrantel As Pamoate Salt
most-associated drug
Verify with FDA CVM →
87
Total Reports
20
Deaths
23.0%
Death Rate

Species Most Affected

Dog 48
Cattle 33
Cat 5
Hedgehog 1

Breeds Most Affected

Cattle (unknown) 12
Retriever - Labrador 8
Crossbred Canine/dog 7
Aberdeen Angus 5
Shepherd Dog - German 5
Dog (unknown) 5
Beagle 4
Retriever - Golden 3
Mixed (Cattle) 3
Holstein-Friesian also known as Holstein 3

Associated Drugs

Ivermectin + Pyrantel As Pamoate Salt 16
Lufenuron + Milbemycin Oxime 7
Eprinomectin 5 Mg/Ml Pour-On Solution 7
Eprinomectin 5
Moxidectin 5
Eprinomectin 5% Injection 5
Milbemycin Oxime + Praziquantel 5
Ivermectin 4
Milbemycin, Lufenuron 3
Doramectin 3
Ivermectin/Pyrantel Pamoate Chewable 68Mcg/163Mg 3
Ivermectin/Pyrantel Pamoate Chewable 136Mcg/326Mg 3
Ivermectin(1%)/Clorsulon(10%) Injection 3
Merial La Polypropylene Syringe 3
Milbemycin 2
Selamectin 2
Ivermectin 0.5% Pour-On Topical Solution 2
Fenbendazol Granules 2
Milbemcyin Oxime, Lufenuron, Praziquantel 2
Fenbendazol Suspension 2

INEFFECTIVE, LUNGWORMS Reaction Insights

87 reports name INEFFECTIVE, LUNGWORMS; 20 recorded a death outcome (23.0% of reported events, not a population-level mortality rate). VeDDRA code: 99126.

By species: Dog (48 reports), Cattle (33 reports), Cat (5 reports). By breed: Cattle (unknown) (12), Retriever - Labrador (8), Crossbred Canine/dog (7).

Most co-reported drugs: Ivermectin + Pyrantel As Pamoate Salt (16 reports), Lufenuron + Milbemycin Oxime (7 reports), Eprinomectin 5 Mg/Ml Pour-On Solution (7 reports), Eprinomectin (5 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.