JVP Dog One Dose Wormer Dogs. A single dose treatment to kill roundworms, tapeworms and hookworm. SizesSize 1 Puppies Small Dog up to 8kgSize 2 Medium Dogs up to 10kgSize 3 Large Dogs 8kg up to 40kgSize 4 Extra Large Dogs 8kg up to 80kg Multi-pack size for large dogs or homes with more than one dog. ContainsNitroscanate This is a AVM/GSL Product.