MT-1

Melanotan I (MT-1) is a synthetic analogue of α-MSH studied as a selective agonist at melanocortin receptors, with research focused on pigmentation pathway signaling.

• • The Mix: MT-2 is combined with Melanotan I (Afamelanotide). [1, 2]
  • The Mechanism: MT-1 is a linear peptide that selectively targets the MC1R receptor on skin cells to stimulate melanin production (tanning) with fewer systemic side effects. MT-2 is a cyclic peptide that binds broadly across multiple melanocortin receptors (MC1R, MC3R, MC4R, and MC5R). [1, 2, 3]
  • The Goal: Combining them is thought by users to create a faster, deeper tanning response while attempting to balance out the severe nausea often caused by pure MT-2. [1, 2]

• • The Mix: MT-2 is paired with PT-141 (Bremelanotide). [1, 2, 3]
  • The Mechanism: MT-2 heavily activates the central MC4R receptor in the brain, which triggers spontaneous erections and heightened sexual arousal. PT-141 was actually developed directly from MT-2 to isolate this specific aphrodisiac effect without forcing the skin-darkening response. [1, 2, 3, 4]
  • The Goal: This blend is utilized in gray-market research settings specifically to maximize central nervous system sexual arousal and treat erectile or sexual dysfunction. [1, 2, 3]

• • The Mix: MT-2 is mixed with metabolic agents like HGH Frag 176-191.
  • The Mechanism: MT-2 activates the MC3R and MC4R receptors, which are heavily involved in nutrient partitioning, energy homeostasis, and acute appetite suppression. [1, 2]
  • The Goal: It is blended into weight-management cycles to simultaneously induce fat loss, blunt hunger, and maintain skin pigmentation during fitness modeling or bodybuilding competition prep. [1]

• • Extreme Nausea & Flushing: Activating central receptors causes sudden facial flushing, involuntary stretching/yawning complexes, and intense, dose-dependent nausea.
  • Hyperpigmentation & Mole Changes: MT-2 blends cause rapid darkening of existing moles and freckles. Medical experts warn against using it if you have a personal or family history of melanoma, as overstimulating melanocytes can mask or complicate skin cancer screenings.
  • Regulatory Stance: MT-2 is an unlicensed, unapproved substance globally and is not approved by the FDA or EMA for any human medical condition. It is also strictly prohibited by the World Anti-Doping Agency (WADA). Are you researching a specific brand name blend, or are you trying to understand how to handle the side effects of Melanotan II?