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