Compare to Robitussin Cough + Chest Congestion DM active ingredients. Basic Care Tussin Cough Syrup DM provides soothing action and targets the source of your cough. Dextromethorphan HBr 20 mg and Guaifenesin 200 mg provide powerful cough and chest congestion relief. This non-drowsy cough medicine is an effective way to loosen mucus and relieve minor throat and bronchial irritation that may occur with a cold. In peak cold season, trust Basic Care Tussin Cough Syrup DM in pleasant wild cherry flavor to control your cough. The non-narcotic formula is reliable and effective at loosening and relieving your chest congestion and mucus. This cough syrup is alcohol and gluten free. Dosage cup included. For ages 12 and over.