Our Oyster Shell Calcium Carbonate Powder is ideal for making Tablets, Capsules, Suspension, Soft Gelatine Capsules, Chewable Tablets, and many other forms in the Pharmaceutical, Food, Nutraceutical, and Cosmetic Industry. Calcium is one of the most important and demanded minerals by the body. With the passage of time, companies have switched over to natural forms of calcium. Gone are the days, when most of the calcium-based supplements were prepared by using rock-based calcium carbonate which has now turned obsolete & prolonged use of which could lead to kidney stones.