: Once you have a prescription, you can buy it from authorized retailers like Chewy Pharmacy , 1-800-PetMeds , or Vetsource. Critical Usage Information
: A licensed veterinarian must issue a prescription based on your dog's current weight. Purchase Locations : In-Clinic : Many clinics, specifically VCA Animal Hospitals ComboGuard buy comboguard
: Your dog must be tested for existing heartworm infections before starting ComboGuard : Once you have a prescription, you can