Anyone looking to increase their daily intake of calcium and Vitamin D3 can benefit from Purely Health Direct’s chewable Calcium with Vitamin D supplements. They contain 400mg of calcium and 2.5µg of Vitamin D3. In addition to maintaining teeth and bones, calcium is also necessary for normal muscle function, energy-producing metabolism, and blood clotting. Vitamin D is needed for the body to effectively absorb calcium. As the body produces vitamin D when exposed to sunlight, it can be difficult to meet requirements, particularly in northern Europe in autumn and winter. Vitamin D helps maintain a normal immune system besides the previously described benefits of calcium.