Adverse Event Reporting

How to Report Animal Drug Side Effects and Product Problem

You should call the product manufacturer.  In some countries, there is an option to email but calling is preferred.  Insist on getting a case number!

BRAVECTO / Merck USA (Merck/MSD Animal Health)

  • 1-800-224-5318

NEXGARD / Merial USA

  • 1-888-MERIAL1 (637-4251) (Option 3)  Hours of operation are Monday-Friday 8 am 6 pm (ET).

TRIFEXIS / Elanco USA

  • 1-888-545-5973

SIMPARICA / Zoetis, Inc.

  • 1-888-963-8471

Second, you should file a report with the FDA.  For more information on filing a report, go to:

https://www.fda.gov