Clinically important side effects of Melanotan II and placebo Download Table Buy Melanotan II for Erectile Dysfunction: What to Know Before Considering It Melanotan II Erectile Dysfunction Studies: What Early Research Shows and Practical Realities 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 Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Rise in use of 'dangerous' tanning injection Channel 4 News