Vitamin D may be one of the most critical nutrients for overall health. Vitamin D can allow our body to effectively absorb calcium and can contribute to healthy bones. It may help with normal immune function. Vitamin D is very effective when taken together with vitamin K.* Immediate effect. Top delivery. Most liposomes on the market use low grades of phospholipids, for example crude lecithin, rather than the high phosphatidylcholine phospholipid mixtures needed for a good liposome. Quicksilver Delivery Systems improves upon basic liposomal delivery technology with smaller, more stable, well-distributed single-layer spheres (called unilamellar vesicles) made from the highest quality ingredients available. These little vesicles start absorbing as soon as they hit your mouth, so you can get high absorption before they are disturbed by the harsh processes in the intestines. – Because vitamin D absorption can be impacted by diet, lifestyle, age, health, and genetic variation, NanoEmulsified Vitamin D3/K2 was developed to render both fat-soluble vitamins highly absorbable.* – Vitamin K2 can also assist vitamin D in keeping bones strong. This formula contains a highly bioactive form of vitamin K2 called menaquinone-7, or MK-7.* – Each 0.5 mL delivers 2500 IU of vitamin D3 and 90 mcg of vitamin K2. A serving is one pump. Each bottle contains 100 servings. – The difference is clear: this products clear consistency can only be achieved with liposomes that are small enough to pass between cells. The smaller, more stable vesicles begin absorbing as soon as they hit the mouth.* – This product uses phosphatidylcholine from purified sunflower seed lecithin. It does not contain gluten.