precisely what is Swiss Chems MK677 Ibutamoren? MK-677, also called ibutamoren or ibutamoren mesylate, is a peptide that belongs to the growth hormone secretagogues team (GHSR). it really works by mimicking the action from the starvation hormone ghrelin. It binds to 1 of the growth hormone secretagogue receptors (GHSR) while in the Mind, helping im