Active substance

Diphenhydramine

3 products from 3 companies contain this in Bulgaria.

3 without prescriptioncoated tabletointmentgel

Available without a prescription

Calmaben50 mgWithout prescriptioncoated tabletPacks of 10, 20, 30 Pharmazeutische Fabrik Montavit Ges.m.b.H · Diphenhydramine · N05CM Dermodrin20 mg/gWithout prescriptionointmentPacks of 1 Pharmaceutische Fabrik Montavit Ges.m.b.H · Diphenhydramine · D04AA32 Psilo-Balsam1%Without prescriptiongelPacks of 1 Stada Arzneimittel AG · Diphenhydramine · D04AA32

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.