Melanotan I is a synthetic version of naturally occurring α-MSH. α-MSH is a Melanocyte stimulating hormone that involves the alteration in body's pigmentation levels. Researchers have been suggesting its use as an aphrodisiac too. However, on a standard basis it is accessed for rendering its tanning or melanogenesis attributes. Melanotan I was extracted from the naturally occurring peptide in the 1980's at the University of Arizona. Nevertheless, even by the year 2010, the use of Melanotan I 10mg in the public pharmacies was not approved by FDA. http://pinnaclepeptides.com/index.php/buy-peptides/melanotan2-262.html