Active substance

Dextromethorphan Hydrobromide + Phenylephrine Hydrochloride + Guaifenesin

2 products from 1 companies contain this in Canada.

2 without prescriptionliquid

Available without a prescription

COUGH SYRUP DM-DECONGESTANT EXPECTORANT15 mg + 5 mg + 100 mgWithout prescriptionliquid Jamp Pharma Corporation · Dextromethorphan Hydrobromide + Phenylephrine Hydrochloride + Guaifenesin · R05FA02 COUGH SYRUP DM-DECONGESTANT-EXPECTORANT EXTRA STRENGTH15 mg + 10 mg + 200 mgWithout prescriptionliquid Jamp Pharma Corporation · Dextromethorphan Hydrobromide + Phenylephrine Hydrochloride + Guaifenesin · R05FA02

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.