Combination of calcium and vitamin D3 in a unique capsule format. One capsule provides 400mg of calcium in three active forms; as calcium hydroxide from Lithothamnion sp, as calcium citrate and as calcium ascorbate alongside 200ug vegan vitamin D3 from lichen. Calcium and Vitamin D are needed for the maintenance of normal teeth and bones. Calcium also contributes to normal neurotransmission and muscle function.