Calcium with vitamin D3 is a popular supplement among people who want optimal bone health. While many foods contain calcium, having a high potency calcium supplement is an easy and convenient way to ensure that you are getting your Recommended Dietary Intake of calcium each day. In addition to bone health, calcium may also help maintain heart rhythm, muscle function, and more. Vitamin D3 is a critical nutrient for the metabolism and absorption of calcium in the body. Vitamin D3 may also have links to energy and a healthy immune system. The U.S. Surgeon General recommends the consumption of adequate amounts of calcium and vitamin D to help prevent osteoporosis. Mason Natural offers calcium supplements in a variety of high-quality formulations to suit your needs.