Mag-Mast® is a natural magnesium carbonate antacid with a cream and sugar flavor. It has two main functions: it acts as a gastric antacid and provides magnesium naturally. Its convenient pocket size is attractive, easy to carry and chewable. Instructions for use Take 2 to 3 tablets daily, after main meals. Average content per daily dose of 2 tablets (1.35 g): magnesium 188 mg (50% NRV*). Average content per daily dose of 3 tablets (2 g): magnesium 282 mg (75% NRV*). ingredients Magnesium carbonate (magnesium), glucose syrup, cream flavor, anti-caking agent (magnesium salts of fatty acids), sweetener (steviol glycosides).