Melanotan II: Tanning injections, nasal sprays harmful to health In a major policy shift, the U.S. Food and Drug Administration is reconsidering restrictions on several controversial peptides, including trending compounds like BPC 157 and Melanotan II. The move comes as demand for No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Tanning, fake tan and Melanotan Cancer Research UK