I have some Revolution topical parasitic for cats that I bought from the vet in Canada. It is made by Pfizer and claims to treat and control/prevent fleas, hookworm, roundworm and heartworm. Because it is applied to the skin it's very easy to apply once a month. The main 'ingredient' is Selamectin. Does anyone know if it is available in UK / Europe? I have tried to find it in the on-line vet pharmacies but they only have separate treatments for fleas and worms. Do you know of any similar treatment available on-line? Thanks.