Active substance

Diphenhydramine Hcl 25mg

3 products from 3 companies contain this in United States.

3 without prescriptionTablet, CoatedCapsule

Available without a prescription

Allergy 36ct, Caseys 4good25 mgWithout prescriptionTablet, Coated Lil' Drug Store Products, Inc. · Diphenhydramine Hcl 25mg Allergy Relief 25 Mg25 mgWithout prescriptionCapsule Ulai Health LLC · Diphenhydramine Hcl 25mg Allergy Relief, 24-7 Lift By 7-Eleven25 mgWithout prescriptionTablet, Coated Lil' Drug Store products, Inc. · Diphenhydramine Hcl 25mg

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.