A vet prescription is required for the medicine you have chosen. Frontline Spray is for the treatment and prevention of flea and tick infestations in cats and dogs, and as part of a treatment strategy for Flea Allergy Dermatitis in cats and dogs. The product is active against Ixodes spp. including Ixodes ricinis, important as the vector of Lyme disease. The product controls infestations with Trichodectes canis biting lice on dogs and Felicola subrostratus biting lice on cats. If you do not yet have a prescription then you can print out the following blank veterinary Prescription Form which you can ask your vet to fill in when you next visit. Please note that changes to legislation in 2005 means that Vets must offer you a prescription to take away and not just supply you the medicines directly. This is to ensure more competition and lower prices for you.