Where to Buy

The most convenient heartworm preventive ever.

PetTrust™ Plus (ivermectin/pyrantel) is the first and only generic prescription heartworm preventive medication distributed directly to retail pharmacies nationwide.¹ Just drop off your dog’s prescription at the pharmacy window and pick it up when you’re done shopping.

Want Free Home Delivery?

Call 1-800-2-REFILL and Walmart will contact your veterinarian to request a prescription
on your behalf.
Walmart offers free home delivery for all orders, once they’re approved by a veterinarian.

Prescription required.

A prescription must be obtained from a veterinarian with whom there is a client-patient-veterinarian relationship. Like any other heartworm preventive medication, you must have a prescription from your veterinarian to buy PetTrust Plus. Find out why.

IMPORTANT INFORMATION: Dogs should be tested for heartworms prior to use. In a small percentage of treated dogs, digestive and neurological side effects may occur. Please see full product insert for more information.

¹PetTrust Plus is only available at Walmart and Sam’s Club pharmacies nationwide.