Peptides offer powerful support for sex drive, orgasm, and emotional connection., PT 141 enhances desire with minimal tanning and boosts sexual arousal, while Melanotan delivers a sun kissed glow. , How do we enhance libido?! PT 141 and Melanotan 2 (MT2) are both good options. PT141 and MT2 both work on the hypothalamus to increase libido. This increase can cause more spontaneous erections in PT 141 (Bremelanotide) is a synthetic peptide developed from Melanotan 2 (MT II). PT 141 was recently approved for the treatment of HSDD (hypoactive sexual desire disorder) in women. PT 141 is a peptide that was MT 1 (Melanotan I) 10mg Research Peptide Laboratory Grade