What is Tussin DM?
Tussin DM is a brand name medication that contains a blend of the drugs dextromethorphan and guaifensin. The drug is available over-the-counter without a doctor’s prescription and is used to treat symptoms of respiratory illness.FunctionThe dextromethorphan contained in Tussin DM affects your nervous system, preventing you from having the urge to cough. The guaifenesin loosens mucus and congestion in your chest so that when you do have the urge to cough you are able to clear some of the fluid build-up.IndicationsTussin DM is indicated to relieve coughing caused by colds, bacterial or viral respiratory infections, hay fever or other seasonal allergies, reports Drugs.com. The drug is not meant to treat coughing due to chronic respiratory conditions like emphysema or chronic obstructive pulmonary disorder (COPD).FeaturesTussin DM is a bright red liquid that comes in a brown-colored bottle.The drug is available in an immediate-release formula or a long-lasting extended-release formula, whi