Bromocriptine is a well-established drug for two conditions, increased levels of the hormone prolactine and parkinsonism. The best-known brand name is Parlodel. Bromocriptine also has a sexuality enhancing effect, though it is not commonly sold for that purpose. Nevertheless, there is little doubt that in many people, bromocriptine will increase sexual response. The reason why the drug is not specifically sold as impotence or frigidity medication: a sufficient number of studies to achieve FDA approval for the specific purpose of sexual enhancement have not been conducted.