Ivermectin + Pyrantel As Pamoate Salt
90,788 adverse event reports submitted to the FDA
Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
90,788
Total Reports
1,834
Deaths Reported
200.0%
Death Rate
Active Ingredients
IvermectinPyrantel As Pamoate Salt
Administration Routes
OralUnknownOtherTopicalSubcutaneousTransplacentalParenteralIntramuscularPerineuralAuricular (Otic)
Species Affected
Dog 82,476
Unknown 8,264
Human 19
Cat 15
Other Canids 5
Macaw 4
Wolf 2
Fox 1
Goat 1
Other 1
Most Affected Breeds
Retriever - Labrador 14,668
Unknown 8,337
Crossbred Canine/dog 5,910
Shepherd Dog - German 4,912
Retriever - Golden 4,645
Dog (unknown) 3,497
Beagle 2,805
Pit Bull 2,672
Chihuahua 1,943
Boxer (German Boxer) 1,843
Most Reported Reactions
Lack of efficacy (endoparasite) - heartworm 18,221
Lack of efficacy (endoparasite) - hookworm 13,580
Digestive tract disorder NOS 13,024
INEFFECTIVE, HEARTWORM LARVAE 11,970
Vomiting 9,752
Cardiac disorder NOS 6,766
INEFFECTIVE, HOOKS 6,534
Lack of efficacy - NOS 5,441
Lack of efficacy (endoparasite) - roundworm NOS 4,626
Tablets, Abnormal 4,498
Diarrhoea 4,361
INEFFECTIVE, ASCARIDS NOS 4,258
Outcome Breakdown
Outcome Unknown
46,613 (56.5%)
Recovered with Sequela
14,093 (17.1%)
Recovered/Normal
12,180 (14.8%)
Ongoing
7,828 (9.5%)
Died
1,165 (1.4%)
Euthanized
671 (0.8%)
Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Data reflects voluntary submissions and may not represent actual incidence rates.