Bremelanotide
Palatin Technologies developed another hormone targeted towards sexual dysfunction therapy based upon melanotan II called bremelanotide (formerly PT-141). Bremelanotide is a metabolite of melanotan II that lacks the C-terminal amide function. The drug has been undergoing clinical trials for the treatment of sexual arousal disorder and erectile dysfunction. It is intended for both men and women. Preliminary results have proven the efficacy of this drug, however development was briefly suspended due to a side effect of increased blood pressure observed in a small number of trial subjects administered the drug intranasally. On August 12, 2009, Palatin announced positive results (none of the previous heightened blood pressure effects were observed) of a phase I clinical study where trial subjects were instead administered the drug subcutaneously. Palatin is concurrently developing a related compound they call PL-6983.
Read more about this topic: Melanotan II