How Long Does DM Max Last?

Generic: DEXTROMETHORPHAN HBR, GUAIFENESIN

Source: Federal Drug Label Data

Storage Conditions

Room temperature

Manufacturer

Walgreen Company

Storage Information

Other information each 20 mL contains: sodium 6 mg store at 25°C (77°F); excursions permitted between 15°-30°C (59°-86°F) use by expiration date on package

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 DM Max on DailyMed (NIH) | Federal drug label data.

Last verified: 2026-03-28