The approval of the pill that aims to treat female sexual disfunction has been in the works for years and today finally passed the U.S. government’s stringent approval process. The Addyi drug, made by Sprout Pharmaceuticals, is the first to actually treat general problems with libido, as opposed to Viagra, which treats erection problems through blood flow. According to the drug-maker, Addyi instead changes the balance of neurotransmitters such as dopamine and serotonin. Supporters of the drug say its availability will help the approximate 10 percent of women who suffer from hypoactive sexual disorder. It’ll be available for prescription October 17.