what on earth is Swiss Chems MK677 Ibutamoren? MK-677, also called ibutamoren or ibutamoren mesylate, is actually a peptide that belongs to the growth hormone secretagogues team (GHSR). It works by mimicking the motion on the starvation hormone ghrelin. It binds to at least one of the growth hormone secretagogue receptors (GHSR) in the Mind, servin