what's Swiss Chems MK677 Ibutamoren? MK-677, often known as ibutamoren or ibutamoren mesylate, can be a peptide that belongs to The expansion hormone secretagogues team (GHSR). it really works by mimicking the action on the hunger hormone ghrelin. It binds to at least one of The expansion hormone secretagogue receptors (GHSR) from the brain, suppor