An effective, easy to administer treatment specifically formulated for dogs and puppies over 8 weeks of age, the Johnsons One Dose Wormer Size 1 is a single-dose treatment killing both Tapeworms and Roundworms commonly affecting pet dogs in the UK. Easy to administer, the Johnsons One Dose Wormer for small dogs and puppies up to 6kg and can either be fed whole or crushed and sprinkled into your pet's dinner to disguise the tablet.