Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Toyota Celica T23 body kit, front bumper, rear bumper, side skirts 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, What is Melanotan II the drug that the TGA urges consumers to avoid?