Heartworms are the most life-threatening of all the common canine parasites. These worms, living in a dog's heart, can cause heart disease and organ failure which can lead to death. Since heartworms are spread by mosquitoes, any dog may be at risk.

Fleas are the most common canine parasite. SENTINEL acts like 'birth control' for fleas. It stops them from reproducing, so they can't cause an infestation. SENTINEL is clean, safe and never leaves a residue or odor on your pet.

Intestinal parasites threaten your dog's health. Worms can cause bloody diarrhea, vomiting, anemia and weight loss. Unfortunately, there's no way to ensure that your dog won't be exposed to them. SENTINEL protects your dog against hookworms, whipworms, and two kinds of roundworm.

Safe and effective. SENTINEL is proven safe for dogs, even puppies as young as four weeks, weighing two pounds or more. It is proven effective in preventing heartworm disease, in controlling and preventing flea infestation, and in protecting against intestinal worms.

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