About this item Comprehensive: Vitamin D, Vitamin K, Calcium, and Magnesium in one product Clinical Research: Four highly studied ingredients essential for bone health MK-7: Vitamin K2 as the well-researched MK-7 Optimal Absorption: The well-absorbed malate forms of calcium and magnesium Free From: Every Thorne product is made with the purest possible ingredients - without gluten or other major allergens (eggs, tree nuts, peanuts). This product also contains no soy, dairy, yeast, shellfish, or fish.