Terranova Calcium Magnesium (50). Terra Nova Calcium Magnesium is used for bone health.. It contains superfoods and botanicals to help with the absorption and utilisation of the calcium.. Stabilized Rice Bran 250mg. Nettle Leaf [Urtica dioica] (fresh freeze dried) 100mg. Horsetail Spring Shoot [Equisetum arvense] (fresh freeze dried) 50mg. Ginger Rhizome [Zingiber officinale] (fresh freeze dried – ORGANIC) 50mg. Alfalfa Flower & Leaf [Medicago sativa] (fresh freeze dried -ORGANIC) 25mg. Pumpkin Seed [Cucurbita pepo] 25mg