what on earth is Swiss Chems MK677 Ibutamoren? MK-677, often known as ibutamoren or ibutamoren mesylate, is often a peptide that belongs to the growth hormone secretagogues group (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) inside the brain, serv