Melanotan II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider Is it Possible to Overdose on Melatonin? Melanotan II injection resulting in systemic toxicity and rhabdomyolysis Australia's health regulator has issued an urgent alert against Melanotan a dangerous tanning product. "This stuff that people are getting is unlicensedand off the black market." Dr Greg Goodman No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky