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.*<br><br>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>Metagenics D3 5000 features 325 mg (5,000 IU) of vitamin D3—the most bioactive form of supplemental vitamin D. It comes in easy-to-swallow softgels, and our vitamin D is solubilized in oil to support absorption in the intestinal tract.