Robitussin DM contains two active ingredients: dextromethorphan and guaifenesin. Dextromethorphan is an antitussive drug used to help relieve constant coughing. This product contains the active ingredient Dextromethorphan HBr and Guaifenesin. Maximum Strength Cough and Chest Congestion DM 4.0 out of 5 stars, average … Active ingredients (in each 20 mL). Dextromethorphan HBr, USP 30 mg – Doxylamine Succinate, USP 12.5 mg. Dextromethorphan HBr, USP 30 mg. Doxylamine Succinate … Robitussin DM products include a variety of active ingredients. But they all contain the cough suppressant dextromethorphan. Active ingredients (in each 20 mL). Dextromethorphan HBr, USP 20 mg – Guaifenesin, USP 200 mg – Purposes – Cough suppressant – Expectorant. Dextromethorphan … Citric acid, corn syrup, FD&C Red No. 40, flavour, glycerin, maltol, polyethylene glycol, propylene glycol, sodium benzoate, sodium carboxymethylcellulose, … Robitussin DM contains two active ingredients: dextromethorphan (a cough suppressant) and guaifenesin (an expectorant that loosens mucus). Robitussin-DM contains two active ingredients, dextromethorphan and guaifenesin. For full information on doses of dextromethorphan and …
