Monthly treatment with PURINA TOTAL CARE Heartwormer, Allwormer & Flea Control Tasty Chew for Medium Dogs will: 1. Prevent heartworm infection 2. Control adult roundworm, immature roundworm, adult whipworm, adult hookworm, adult tapeworm infection 3. Provide long term protection and control of flea infestations, and control of flea allergy dermatitis. Units in pack: 1 x Chew Dosage: Once a month Suitable for: Medium dogs and puppies 11 to 22 kg in bodyweight Prevents heartworm infection Controls roundworm, adult whipworm, hookworm and tapeworm Prevents and controls fleas long-term Controls flea allergy dermatitis Delicious meaty chew A perfect 'all-in-one' monthly dose!.