Drontal Chewables for dogs, one chew treats 10kg. Treats and controls all major intestinal worms including roundworm, whipworm and hookworm. Controls tapeworms, including the hydatid tapeworm. Controls shedding of Giardia oocysts. Safe for treatment of puppies from 2 weeks of age, as well as lactating females. Pregnant females should only be treated 10 days before whelping. Does not control heartworm.