This product has no: LACTOSE; PRESERVATIVES; GLUTEN. Calcium is an essential mineral for strong teeth and bones. It plays an important role in blood clotting and muscle contraction and helps to maintain a healthy nervous system.** Vitamin D to help calcium absorption.** Adequate calcium and vitamin D throughout life, as part of a well-balanced diet, may reduce the risk of osteoporosis. This product may also help keep your colon healthy.** For Bone & Colon Health** COMPARE TO CALTRATE® 600+D ingredients†† Gluten free