<p>When given as a shot: Melanotan is PERHAPS HARMFUL when offered as a shot. It can reasons nausea or vomiting, belly pains, reduced cravings, flushing, tiredness, yawning, dimmed skin, spontaneous erections of the penis, and also opposite side results. In some people, especially those with light skin, a modification in the shape of moles, new moles, as well as skin cancer, have all occurred in people