Quad, 2 pack, 135mg, large dog dewormer, helps to remove 4 kinds of common worms, safe, at home treatment removes common tapeworms, hookworms, roundworms & whipworms, chewable, tablet form is easy to administer directly in the mouth or masked in food, contains the active ingredients praziquantel, pyrantel pamoate & febantel, no prescription required, safe for dogs over 45 lb & 3 weeks of age.