what's Swiss Chems MK677 Ibutamoren? MK-677, also referred to as ibutamoren or ibutamoren mesylate, is really a peptide that belongs to the growth hormone secretagogues group (GHSR). It works by mimicking the motion on the starvation hormone ghrelin. It binds to one of The expansion hormone secretagogue receptors (GHSR) in the brain, serving to imp