If you are worried that your dog may have tapeworm, ask for a dewormer with praziquantel, which is effective in treating all types of tapeworm. Praziquantel is used in Drontal Plus, which also treats hookworm, roundworm and whipworm, Iverhart Max, which also treats hookworm and roundworm, and Droncit, which is specifically for tapeworm.