Vitamin D3 with clinically tested & pattened BioPerine®, a unique black pepper extract that takes this product to an elite level.  
 
Many people know about the many benefits of vitamin D3. What many don’t know is that vitamin D has a best friend, vitamin K. Vitamin K helps to maximize the benefits of vitamin D. Vitamin D helps the body absorb and use calcium, and vitamin K helps direct the body to the proper places to store it, like in the bones.