How Long Does Guaifenesin Syrup and Dextromethorphan Last?

Generic: GUAIFENESIN SYRUP AND DEXTROMETHORPHAN

Source: Federal Drug Label Data

Storage Conditions

Room temperature Refrigerate

Manufacturer

Natco Pharma USA LLC

Storage Information

Other Information • Store at controlled room temperature 20-25ºC (68-77ºF) • Do not refrigerate • Keep tightly closed • Each 5mL contains sodium 3mg • Each 10mL contains sodium 6mg • Fruit punch flavor • Do not use if lid seal is open or damaged • See top of cup for lot number and expiration date

Important: This information is from federal drug label data and is for reference only. Always follow the specific expiration date printed on your medication packaging. Consult your pharmacist or healthcare provider with questions about medication storage or expiration.

Data source: View Guaifenesin Syrup and Dextromethorphan on DailyMed (NIH) | Federal drug label data.

Last verified: 2026-03-28