Good Sense Adult Tussin Syrup Cough Suppressant (Dextromethorphan HBr) Expectorant (Guaifenesin) temporarily relieves cough due to minor throat and bronchial irritation as may occur with a cold. Helps loosen phlegm (mucus) and thin bronchial secretions to drain bronchial tubes. Compare to Robitussin Cough + Chest Congestion DM active ingredients