What is Swiss Chems MK677 Ibutamoren? MK-677, also referred to as ibutamoren or ibutamoren mesylate, is usually a peptide that belongs to The expansion hormone secretagogues group (GHSR). It works by mimicking the action from the hunger hormone ghrelin. It binds to 1 of The expansion hormone secretagogue receptors (GHSR) in the brain, assisting imp… Read More