Can I Buy Heartworm Medicine At Petsmart -

: The prescription must be active and typically issued within the last 12 months .

💡 : Most veterinarians require an annual heartworm test before they will approve a new prescription or refill. This ensures it is safe to start the medication, as giving preventatives to a pet that already has heartworms can cause severe or fatal reactions. can i buy heartworm medicine at petsmart