ComboGuard is frequently sold directly through VCA Animal Hospitals and other participating clinics.
It starts killing fleas within 30 minutes and is 100% effective against heartworm when used as directed. Important Safety Note COMBOGUARD® - Vethical buy comboguard for dogs
While less common for this specific brand (which is often clinic-exclusive), some owners use their prescription to buy similar multi-parasite preventatives from retailers like Chewy Pharmacy or 1-800-PetMeds . Key Product Details ComboGuard is frequently sold directly through VCA Animal