Worms in dogs and puppies are very common, and whilst they might be a concern to owners, they do not usually have serious consequences and are easy to treat. If not treated, worms can cause diarrhoea or vomiting, weight loss despite a good appetite and weakness. Bob Martin Clear All in One Wormer Tablets for dogs and puppies is a highly effective treatment for roundworm, tapeworm, whipworm and hookworm to keep your dog happy, healthy and worm free. Worming should be done regularly regardless of symptoms as a preventive measure.