MucoStop is a blend of proteolytic enzymes to help reduce the effects of histamine-induced inflammation. The purpose of MucoStop is to support normal mucus function while helping to speed the breakdown and removal of inappropriate mucus. Mucolase, one of the enzymes in MucoStop , is a proteolytic enzyme (breaks down protein) that has mucolytic properties, meaning it targets and hydrolyzes inappropriate or excess mucus.