Calc tablet is used as bone joint supplement and contains Calcium Carbonate. Calcium carbonate is a mineral that is required for the formation of bones and maintaining them. Calcium carbonate is required to prevent breakage of bones. Calcium is used to prevent or treat low blood calcium levels in people who do not get enough calcium from their diets. Calc tablet is a nutritional supplement which can be taken by people who have low levels of calcium in their blood.Calc tablet is used in elderly people to keep bones healthy and strong, and is even effective in Chronic arthritis and Osteoporosis.