Canine All Wormer offers total protection from all 11 intestinal worms (including roundworm, whipworm, hookworm, tapeworm and hydatid tapeworm).    Contains Praziquantel, Pyrantel and Oxantel. Treat once every three months. Safe for puppies from 2 weeks of age, as well as pregnant & lactating bitches, working dogs, greyhounds and senior dogs. Canine All Wormer can be safely combined with flea and tick treatments. Does not prevent heartworm.