How Long Does Chest Congestion Relief DM Last?

Generic: DEXTROMETHORPHAN HBR, GUAIFENESIN

Source: Federal Drug Label Data

Storage Conditions

Room temperature

Manufacturer

DOLGENCORP, LLC

Storage Information

Other information store at 25ºC (77ºF); excursions permitted between 15º-30ºC (59º-86ºF) see end flap for expiration date and lot number

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 Chest Congestion Relief DM on DailyMed (NIH) | Federal drug label data.

Last verified: 2026-03-28