Dr. D'Adamo's unique combination of vitamins D3 and K plus 2 traditional Chinese herbs supports bone and connective tissue health and helps to reduce the risk of bone fractures. Phyto D 2000™ formulated by Dr. D'Adamo includes a unique combination of vitamins D3 and K and is compounded with Epimedium and Drynaria-two traditional Chinese herbs with long historical usage in the support of proper bone and connective tissue health. Vitamin D has essential wide-ranging effects throughout the body including maximizing bone health to stabilizing mood and energy levels. Increased dietary Vitamin K intake is associated with increased bone formation and decreased bone breakdown. Phyto D 2000™ also includes Strontium a naturally-occurring mineral routinely prescribed throughout Europe that has been shown in many studies to reduce the risk of bone fractures.