Melanotan 2 Reviews, Clinical Trials, and Safety Peptides are having a moment, but not all of them are harmless., One thats getting a lot of attention right now? Melanotan II., Its being used to achieve a tan from the inside, but what it Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Melanotan 2 is an unregulated, unsafe substance often advertised as a self tanning aid., Use of Melanotan 2 has been linked to serious side effects including loss of vision, moles, stroke, muscle Melanotan II for Erectile Dysfunction: What the Evidence Shows and Practical Considerations