<strong>D3 2000 Complex</strong> delivers 50 mcg (2,000 IU) of the preferred form of vitamin D, as vitamin D3, in each tablet. The inclusion of isoflavones may help facilitate the body's utilization of vitamin D3. <br><br>Vitamin D insufficiency is common and is increasingly considered an emerging global health issue. This product features high-potency vitamin D, which is important for maintaining healthy bone structure and immune function. Some research suggests that vitamin D sufficiency may contribute to cardiovascular health and function.* In the past, vitamin D was thought to function primarily in bone mineralization. Today we know that “vitamin” D is actually a hormone that plays a role in numerous pathways and aspects of human health (Kuchuk NO et al. J Bone Miner Res. 2009;24(4):693-701; Wranicz J et al. Rocz Panstw Zakl Hig. 2014;65(4):273-279).<br><br>Covered by the Metagenics, Inc. 60-Day Satisfaction Guarantee. If you are not satisfied with your Metagenics product purchased from Metagenics or an authorized seller, you may request a refund or replacement product. Because Metagenics is unable to control the quality of products sold by unauthorized sellers,unless otherwise prohibited by law, the Guarantee is not available for products purchased from unauthorized sellers. You are required to send your product and proof of purchase to Metagenics. The Guarantee applies only to the original, end-user purchaser. A Guarantee claim must be made within 60 days of purchase. Metagenics reserves the right to deny guarantee requests in cases of suspected fraud or abuse.