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SIMPARICA TRIO

FDA Application Number: 141-521

Based on the FDA Center for Veterinary Medicine data from April 2020 to March 2026: Of 862 reported animal deaths involving SIMPARICA TRIO, 511 occurred when SIMPARICA TRIO was the only drug administered - representing 59% of all fatalities.

59%
SINGLE-DRUG FATALITIES
SIMPARICA TRIO ONLY
50,202
TOTAL ANIMALS REPORTED
862
TOTAL FATALITIES
511
SINGLE-DRUG FATALITIES

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Top 3 Reported Reactions

Vomiting
Lack of Efficacy (Bacteria) - Borrelia
Lack of Efficacy (Endoparasite) - Heartworm

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SafeVetMeds equips users with the intelligence tools to ask better questions about veterinary drug safety. Powered by 100 million FDA adverse event data points, it delivers advanced safety insights, cross-drug comparisons, and real-world FDA data that is easy to search and simple to understand. The first platform of its kind now available to protect animals.

All data is sourced from the FDA Center for Veterinary Medicine adverse event reports submitted voluntarily by veterinarians, pet owners, and drug manufacturers. This information has not been independently verified and does not establish that any drug caused the reported outcomes. These reports reflect what was submitted to the FDA, not confirmed cause-and-effect relationships or actual risk rates. Reporting rates may vary by drug, manufacturer, and time period, and may be delayed up to 6 months. The percentage shown represents proportions within the reported dataset and does not indicate risk probability or safety ratings. SafeVetMeds is a 501(c)(3) nonprofit providing data transparency infrastructure and does not provide veterinary medical advice, diagnostic services, or legal counsel. For medical decisions regarding your animal, consult a licensed veterinarian. For legal questions, consult an attorney. This data should be considered as one factor among many in medical decision-making, not as definitive evidence of drug safety or danger.