Active substance

Diphenhydramine

2 products from 1 companies contain this in Canada.

2 without prescriptiontablet

Available without a prescription

DORMIRAX25 mgWithout prescriptiontablet Laboratoire Riva Inc. · Diphenhydramine · R06AA02 DORMIRAX50 mgWithout prescriptiontablet Laboratoire Riva Inc. · Diphenhydramine · R06AA02

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.