How Long Does Allergy Medicine Last?

Generic: DIPHENHYDRAMINE HCL

Source: Federal Drug Label Data

Storage Conditions

Room temperature Protect from moisture

Manufacturer

COSTCO WHOLESALE CORPORATION

Storage Information

Other information each tablet contains: calcium 30 mg protect from moisture use by expiration date on package store at 25°C (77°F); excursions permitted between 15°-30°C (59°-86°F)

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 Allergy Medicine on DailyMed (NIH) | Federal drug label data.

Last verified: 2026-03-28