Active substance

Aluminum Hydroxide + Magnesium Hydroxide + Simethicone

2 products from 2 companies contain this in Canada.

2 without prescriptiontabletsolution

Available without a prescription

ANTACID WITH ANTI-GAS LIQUID EXTRA STRENGTH MINT FLAVOUR306 mg + 400 mg + 40 mgWithout prescriptionsolution Cellchem Pharmaceuticals Inc. · Aluminum Hydroxide + Magnesium Hydroxide + Simethicone · A02AF02 MAGSIL200 mg + 200 mg + 20 mgWithout prescriptiontablet Fortune Pharmacal Co. Ltd. · Aluminum Hydroxide + Magnesium Hydroxide + Simethicone · A02AF02

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.