Vetsupply: A potent broad-spectrum anthelmintic tablet Milbemax is an effective dewormer for dogs. This oral treatment destroys different intestinal worms such as whipworms, roundworms, hookworms and tapeworms. The unique formula also works to protect dogs from harmful heartworm infection. The monthly dose is safe for all breeds and sizes of dogs and is suitable to use in breeding, pregnant and lactating dogs.