what's Swiss Chems MK677 Ibutamoren? MK-677, generally known as ibutamoren or ibutamoren mesylate, is really a peptide that belongs to the growth hormone secretagogues team (GHSR). it really works by mimicking the action of the starvation hormone ghrelin. It binds to at least one of The expansion hormone secretagogue receptors (GHSR) within the bra