what exactly is Swiss Chems MK677 Ibutamoren? MK-677, also known as ibutamoren or ibutamoren mesylate, is often a peptide that belongs to the growth here hormone secretagogues team (GHSR). It works by mimicking the motion in the hunger hormone ghrelin. It binds to at least one of the growth hormone secretagogue receptors (GHSR) from the Mind, suppo