What is Melanotan II?
Melanotan II (MT-2) is a synthetic cyclic heptapeptide analog of α-melanocyte-stimulating hormone (α-MSH). It is a non-selective agonist at multiple melanocortin receptors — most importantly MC1R (pigmentation) and MC4R (appetite, libido, autonomic tone).
It has been studied since the 1990s in pigmentation and photoprotection research, and later in sexual-response and appetite-regulation studies.


