WormX DS Liquid Wormer is a double strength formulation for the removal of large roundworms (Toxocara canis; Toxacaris leonine), and hookworms (Ancylostoma caninum and Uncinaria stenocephala) in dogs and puppies. Easy-to-administer liquid formula has a butterscotch flavor that dogs love. Active Ingredient: 4.54 mg of pyrantel Directions: Safe for all dogs 2 weeks of age and older. Dosage: Administer one full teaspoonful (5mL) for each 10 lb of body weight. Made in the USA. Shop PetSmart for a variety of dog medicine, supplements and first aid products for your dog. We carry medicine for arthritis such as glucosamine, chondroitin and aspirin for dogs, as well as treatments for skin problems, teeth cleaning products, ear and eye cleaning products and more.