Free shipping on orders over $15012% off your first order — code FIRST12Stack 3+ peptides, save 20% with STACK20US 503A partner pharmacy · Cold-chain shipped
Free shipping on orders over $15012% off your first order — code FIRST12Stack 3+ peptides, save 20% with STACK20US 503A partner pharmacy · Cold-chain shipped
← All peptides
Tanning & Sexual Health

Melanotan II

MT-II

A synthetic analog of α-MSH that activates melanocortin receptors driving melanogenesis and sexual arousal.

Melanotan II

Compounded · 503A Pharmacy

Mechanism of action

Non-selective melanocortin receptor agonist (MC1R, MC3R, MC4R, MC5R).

Studied uses

  • Skin pigmentation / sunless tanning
  • Erectile dysfunction (precursor to FDA-approved PT-141)
  • Appetite modulation

Research highlights

  • · Direct precursor to bremelanotide (PT-141), FDA-approved as Vyleesi
  • · Predictable melanogenesis across Fitzpatrick skin types

Side effects & cautions

  • · Nausea & flushing common, especially first doses
  • · New or darkening moles — annual dermatologic check required
  • · Spontaneous erections