Australian Naturalcare Calcium for Healthy Bones helps support optimum bone strength throughout life. It has been specially formulated to support bone growth and development and to maintain bone strength. This comprehensive formula combines calcium citrate (a form of calcium thats particularly useful for helping to avert bone loss and stabilise bone density) with hydroxyapatite (a form of calcium that occurs naturally in our bones and is well utilised by the body) plus nutritional co-factors such as magnesium, manganese and boron, that provide a strong base for healthy bones, including vitamin D3, which helps calcium absorption.