Nature's Way Air-Power 100 tabsDietary Supplement Uses: helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of mucus and make coughs more productive Air Power guaifenesin expectorant o Helps thin and loosen mucus o Clears respiratory airways Fast acting Air Power guaifenesin expectorant helps thin and loosen mucus, making coughs more productive and clearing airways for respiratory comfort. This non drowsy formula contains the expectorant