Dextromethorphan is an antitussive (cough suppressant) available in over-the-counter (OTC) medicines that control coughs due to minor throat and bronchial irritation, as may occur with the common cold or inhaled irritants. It may be written as dextromethorphan or dextromethorphan hydrobromide, but it is the same active ingredient. Dextromethorphan can be the only active ingredient in […]

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