Active substance

Diphenhydramine Hcl 25 Mg

8 products from 6 companies contain this in United States.

8 without prescriptionTablet, Film CoatedTabletTablet, CoatedCapsule, Liquid Filled

Available without a prescription

Same substance is not the same product. Strength, form, release mechanism and other ingredients all differ. Whether one can replace another is a decision for a pharmacist.