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 Melanotan II: Tanning injections, nasal sprays harmful to health Nasal tanning sprays linked to skin cancer, trading standards officers warn Consumer affairs The Guardian Emerging Threat: Melanotan, Repackaging, and Online Sales Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky