One Dose Wormer for Cats & Kittens is a premium product which is Veterinary Strength to kill both Roundworms and Tapeworms. Like all Johnson’s products it is available over the counter AVM/GSL. It is exclusive to the Pet Trade and will not be supplied to Supermarkets or various retail discount outlets which are targeting the Pet Trade.Johnson’s One Dose Wormer for Cats & Kittens contains small tablets which are film coated to assist easier dosing and are highly effective in a single dose against common types of Roundworms and Tapeworms. The tablets should be give directly to the cat, or can be disguised in tasty food and are suitable for regular worming 3 or 4 times a year as recommended by Veterinary Surgeons.