Stabilised Rice Bran (SRB) - As well as supplying an abundance of magnesium, research suggests that rice bran may reduce the urinary excretion of calcium. Nettle Leaf - Nettle is an excellent source of both calcium and magnesium. In addition, it provides several nutrients which are known to enhance the function and/or bioavailability of calcium in the body (and within the bones in particular), such as boron, vitamin K, vitamin D, silicon, zinc and vitamin C. Horsetail Spring Shoot - Like nettle, horsetail contains calcium and many calcium-enhancing nutrients, including silicon, magnesium, vitamin D, vitamin C and sulphur. Especially significant is the content of silicon, which is needed to form a sort of 'glue' for maintaining the integrity of skeletal tissue. Ginger Rhizome & Root - Insufficient digestive activity in the stomach is associated with poor calcium and magnesium absorption. Ginger's influence on stomach digestion may facilitate the bioavailability of both minerals. Alfalfa Flower & Leaf - In addition to being a source of vitamin K, calcium, magnesium and boron, alfalfa is also rich in isoflavones, which are often used for the support of bone health. Pumpkin Seed - The seeds are one of nature's richest sources of the important bone nutrient zinc, as well as magnesium and vitamin K.