Those nasty gastrointestinal worms don't stand a chance against Aristopet All Wormer Dogs and Puppies. These mighty tablets treat your dog for all major species of gastrointestinal worms - including hookworm, roundworm, whipworm and tapeworm. Dogs are constantly exposed to intestinal worms, even before they are born. Some species of worms can transfer to puppies through the placenta or from their mothers milk, while adult dogs are exposed to worm larvae or eggs through the soil in parks and backyards. So prevention is key! Product details 1 tablet is used per 10kg body weight scored tablets for easy dosing safe for use in all dogs over 1.5kg including puppies, pregnant and lactating bitches pregnant bitches should be treated prior to mating, shortly before whelping and then at least every 3 months thereafter does not provide protection from heartworm.