Fact Checked Mucinex DM is an over-the-counter (OTC) combination medication that relieves cough and chest congestion caused by the common cold, flu, and allergies. Each tablet combines dextromethorphan hydrobromide, a cough suppressant, with guaifenesin, a drug that loosens mucus and bronchial secretions in the lungs. Generic Name (S): dextromethorphan-guaifenesin Uses This combination medication is used to relieve coughs caused by the common cold, bronchitis, and other breathing illnesses. Guaifenesin belongs What is Mucinex DM? Dextromethorphan is a cough suppressant. Guaifenesin is an expectorant. Mucinex DM is a combination medicine used to treat cough and chest congestion caused by the common cold or allergies. Dextromethorphan will not treat a cough that is caused by smoking. Mucinex and Mucinex DM both contain an expectorant that helps loosen mucus. Mucinex DM eHREPka. 1. Mucinex D helps with nasal congestion, while Mucinex DM helps quiet a cough Both Mucinex D and Mucinex DM help relieve chest congestion. This is because they both contain guaifenesin (an expectorant ). It helps relieve chest congestion by thinning and loosening mucus in your lungs and throat. Mucinex and Mucinex DM both contain an expectorant that helps loosen mucus. Mucinex DM Generic Name (S): dextromethorphan-guaifenesin Uses This combination medication is used to relieve coughs caused by the common cold, bronchitis, and other breathing illnesses. Guaifenesin belongs What is Mucinex DM? Dextromethorphan is a cough suppressant. Guaifenesin is an expectorant. Mucinex DM is a combination medicine used to treat cough and chest congestion caused by the common cold or allergies. Dextromethorphan will not treat a cough that is caused by smoking.

what does the dm stand for in mucinex dm