Dextromethorphan-containing Syrup

**Semantic type:** Pharmacologic Substance

**Definition:** An orally administered syrup containing the antitussive dextromethorphan hydrobromide alone or in combination other agents that relieve cough and/or cold symptoms. Dextromethorphan is used to suppress cough by raising the threshold for coughing in the cough center in the central nervous system (CNS).