OB Cal A Tablet is used as bone joint supplement to make joints stronger and healthier, it contains zinc which is used to help in aiding growth of the body and also used to prevent or treat low vitamin D levels. | Key Ingredients: Calcium Citrate Vitamin D3 Zinc Magnesium | Key Benefits: Used for treating low levels of Calcium in the body Helps in keeping bones healthy and strong It is often used as bone joint supplement Zinc is used to help growth of the body and to maintain good health | Directions For Use: Use as directed by the physician. | Safety Information: Store in a cool, dry and dark place Keep out of reach of the children Do not exceed the recommended dosage