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: 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

: Your dog must be tested for existing heartworm infections before starting ComboGuard buy comboguard

ComboGuard is a prescription, beef-flavored chewable tablet for dogs that provides broad-spectrum protection against fleas, heartworms, and intestinal parasites like roundworms, hookworms, and whipworms. How to Buy ComboGuard ComboGuard Go to product viewer dialog for this item. : A licensed veterinarian must issue a prescription