Active substance

Dextromethorphan Hydrobromide + Pseudoephedrine Hydrochloride + Doxylamine Succinate + Acetaminophen

4 products from 2 companies contain this in Canada.

4 without prescriptioncapsule

Available without a prescription

COMPLETE LIQUID CAPSULES NIGHTTIME RELIEF15 mg + 30 mg + 6.25 mg + 325 mgWithout prescriptioncapsule Vita Health Products Inc · Dextromethorphan Hydrobromide + Pseudoephedrine Hydrochloride + Doxylamine Succinate + Acetaminophen · N02BE51 NIGHTTIME15 mg + 30 mg + 6.25 mg + 325 mgWithout prescriptioncapsule Jamp Pharma Corporation · Dextromethorphan Hydrobromide + Pseudoephedrine Hydrochloride + Doxylamine Succinate + Acetaminophen · N02BE51 NIGHTTIME COLD & FLU LIQUID CAPSULES15 mg + 30 mg + 6.25 mg + 325 mgWithout prescriptioncapsule Vita Health Products Inc · Dextromethorphan Hydrobromide + Pseudoephedrine Hydrochloride + Doxylamine Succinate + Acetaminophen · N02BE51 NIGHTTIME LIQUA CAPS10 mg + 30 mg + 6.25 mg + 250 mgWithout prescriptioncapsule Jamp Pharma Corporation · Dextromethorphan Hydrobromide + Pseudoephedrine Hydrochloride + Doxylamine Succinate + Acetaminophen · N02BE51

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.