Jamieson Calcium Citrate 250 mg with Vitamin D is formulated with premium-grade, bioavailable Vitamin D3, the natural form synthesized by the body when skin is exposed to sunlight. Calcium Citrate with Vitamin D is ideal for seniors and people with low stomach acid. Calcium citrate is easy to digest and it can be taken on an empty stomach. Like other Jamieson calcium supplements, Calcium Citrate with Vitamin D supports strong bones and teeth and helps prevent osteoporosis to reduce the risk of fractures later in life. This product may help reduce high blood pressure and plays a role in relieving PMS symptoms. It also helps prevent insomnia, supports colon health and is good for adolescents and post-menopausal women.