Jamieson Calcium Magnesium contains calcium from a highly absorbable natural complex and it is also formulated using a highly absorbable natural complex of five magnesium sources including citrate, fumarate, malate, succinate and glutamate. Calcium Magnesium helps maintain strong bones and healthy teeth and helps prevent osteoporosis, which increases the risk of fractures later in life. It may also help to reduce high blood pressure and it plays a role in relieving PMS. Calcium helps alleviate insomnia, supports colon health and is good for adolescents and post-menopausal women. This calcium-magnesium formula helps maintain a steady metabolism while conducting nerve impulses. Together, these minerals support mutual absorption and utilization. The optimal two-to-one calcium-magnesium ratio also prevents adverse gastrointestinal side effects often found when the two minerals are combined.