Heartgard and its standard successor, , can be purchased through various channels including veterinary clinics, major online retailers, and brick-and-mortar stores. However, because they are FDA-approved heartworm preventatives, they are strictly prescription-only in the United States. You must have a current heartworm test on file and a valid prescription from your veterinarian to complete a purchase. Where to Purchase Heartgard Plus
Allivet: A licensed pet pharmacy that provides comparison data on heartworm treatments. : Walmart PetRx Heartgard Plus where to buy heartgard
Legally required in the US. Retailers will contact your vet to verify the script. Heartgard and its standard successor, , can be