Interceptor Flavor Tabs protect your pet against four different parasites all at once. Approved by the FDA, Interceptor prevents deadly heartworm disease, while also effective against adult roundworms, adult hookworms, and whipworms, all wrapped up in a beefy tasting tablet that your dog will love. This oral, monthly preventive is even safe enough for puppies as young as 4 weeks, weighing over 2 pounds.