I noticed the other day that Cure Disease potions can actual heal you from Sanguinare Vampiris. You do need to take multiple Cure Disease potions, but it does work. You will be cured from vampirism. However I have always tried it at early stages, so i have no recollection if it does work in final stages of vampirism. I always keep at least 5 Cure Disease in my inventory and whenever I get the first stages of vampirism i just take 3 or 4 potions. Works like a charm. Thought I shared this with you lot.