Melanotan II is the product that's been dubbed the "Barbie drug" on social media, and promises to give users a tan without the sun but it can have serious side effects including, in rare cases, View of Association of tanning injection with hypercortisolism, hyperglycaemia and ketosis in type 1 diabetes mellitus British Journal of Diabetes The effect of vitamin C supplementation on lipid profile of type 2 diabetic patients: a systematic review and meta analysis of clinical trials Diabetology & Metabolic Syndrome Springer Nature Link Bio C 120 capsules Biomed Melanotan & Tanning Injections: Safe or Risky?