Melanotan is trending again. As a dermatologist, I strongly need to tell you , Its an unapproved injectable peptide, and were seeing:, nausea and flushing, darkening of existing moles, Think twice before injecting peptides bought online: unauthorized products can seriously harm you Canada.ca Cancer Association of South Africa (CANSA) Fact Sheet and Position Statement on Sunless Tanning Dangerous' tanning products promoted by influencers BBC News Australia's Therapeutic Goods Administration is urging consumers to not use tanning products containing a synthetic peptide called 'Melanotan'. The drug can cause serious side affects, such a kidney failure, chest pains, acne, Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn