Melanotan II is not like viagra more than SERMs is like AI. The results may be the same, but the mechanisms are not the same.
Viagra works on the vascular system. MT2 actually increases arousal. This is way Mt2 increases arousal in both men and women.
9 of 10 men will get sexual arousal and spontaneous erections from MT2
MT2 has a long list of potential sides. Abdominal pains and nausea is quit normal. My Gf can not use MT2 due to this. She gets it bad.
Skin discoloration is not unusual. Blue lips and vomiting occurs in some cases.