Clinically important side effects of Melanotan II and placebo Download Table Melanotan II Erectile Dysfunction: What the Research Shows and Practical Considerations Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically Risks of Melanotan: TGA to issue fresh warning against 'Barbie drug' The Australian Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and Melanotan II reverses memory impairment induced by a short term HF diet ScienceDirect