Still Have Questions about Trifexis?

Where can i ask product-related questions and general queries?

Your veterinarian is your best source of information about your dog’s health. If you have any questions about your dog’s health or whether Trifexis® (spinosad + milbemycin oxime) is a good choice for your dog, please ask your veterinarian.

For product-related questions, please call 1-888-545-5973.

Where can i ask Elanco Companion Animal Health rebate questions?

Please call 1-844-408-8476.

Can I submit questions about Trifexis via social media?

To help us best respond to you, please submit technical questions or report a suspected adverse drug reaction by contacting Elanco Animal Health at 1-888-545-5973. Additional information can be found at For additional information about adverse drug experience reporting for animal drugs, contact the FDA at 1-888-FDA-VETS or visit