Calcium Utilization: Synergy K is a blend of vitamin K1, K2 and D3 to help promote healthy calcium utilization in order to maintain healthy bones and blood vessel function.* Bone Support: Synergy K specifically helps support bone formation and mineralization.* Vascular Support: Supports healthy calcium metabolism in vascular tissue to support vascular elasticity.* Pure Quality: Our supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity. Pure Difference: What makes us different isn't just our process or what goes into our supplements -- what we leave out matters, too. All Pure Encapsulations products are FREE FROM many common allergens like wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, unnecessary binders, fillers & preservatives, and more.