: Most pet owners buy directly from their vet during their annual checkup. This is often the most convenient way to ensure you get the correct dosage immediately.
: Pets must be tested for existing heartworms before starting medication. Giving preventative meds to a pet that is already heartworm-positive can cause a dangerous, sometimes fatal, reaction. where to buy heartworm medication
: Major retailers with pet divisions, such as Walmart PetRx or Costco , often carry heartworm preventatives at lower prices. : Most pet owners buy directly from their
: Retailers like Petco and PetSmart have online and in-store pharmacy services that can fulfill prescriptions. Why a Prescription is Required such as Walmart PetRx or Costco