Welcome to MAG CARB, your trusted North American source for high-quality, pharmaceutical grade magnesium carbonate. Our product is the purest form of magnesium carbonate available on the market, making it the ideal choice for pharmaceutical companies, compounding pharmacies, and dietary supplement manufacturers who demand the highest quality and purity standards for their products. Please peruse our product information tab to learn about our manufacturing process & latest COA, which is updated to the batch we are currently shipping.