exactly what is Swiss Chems MK677 Ibutamoren? MK-677, generally known as ibutamoren or ibutamoren mesylate, can be a peptide that belongs to The expansion hormone secretagogues group (GHSR). it really works by mimicking the action on the hunger hormone ghrelin. It binds to one of the growth hormone secretagogue receptors (GHSR) in the brain, assist