what exactly is Swiss Chems MK677 Ibutamoren? MK-677, also called ibutamoren or ibutamoren mesylate, is a peptide that belongs to the growth hormone secretagogues group (GHSR). it really works by mimicking the motion from the hunger hormone ghrelin. It binds to 1 of the growth hormone secretagogue receptors (GHSR) inside the Mind, serving to boost