Treats and controls all 11 gastrointestinal worms, including different species of roundworm, hookworm, whipworm, tapeworm, plus hydatid tapeworm. Easy to administer, a single dose protects adult dogs for up to 3 months (6 weeks for hydatid tapeworm).,Treats and controls all 11 gastrointestinal worms, including different species of roundworm,