Nature Made Liquid Softgel Calcium is an easy-to-swallow softgel that provides adequate calcium and vitamin D to help build and maintain strong bones and teeth and may help prevent osteoporosis. Calcium is the most abundant mineral in the body with more than 99% of the body’s calcium found in bones and teeth. In addition to its important role in bone health, calcium plays a role in other bodily processes such as muscle contraction, regulation of heart beat, release of neurotransmitters and also assists with the clotting of blood.