You have several options for purchasing Trifexis, ranging from local clinics to major online retailers. Trifexis for Dogs Chewables Flea and Heartworm - PetCareRx
Trifexis is a medication, meaning you cannot buy it over-the-counter. To purchase it, your dog must have a current heartworm test on file with your veterinarian. Where to Buy Trifexis where to buy trifexis