D-Mulsion 1000 provides 25 mcg (1,000 IU) of vitamin D3 (cholecalciferol) per drop in an emulsified formula for improved bioavailability. The vitamin D receptor is present in nearly all human cells, demonstrating the important role of vitamin D in supporting overall well-being. While it is best recognized for its ability to promote bone health, vitamin D also maintains muscle function, healthy heart and blood vessels, immune function (especially in the upper respiratory tract), cognitive health, and mood balance. Despite its importance to many physiological functions, many Americans have inadequate levels of vitamin D. This may result from insufficient sun exposure, indoor living, wearing covering clothes, limited consumption of vitamin D-containing foods, dark skin color, older age, or low intake of vitamin D supplements. With just one convenient drop daily, this formula promotes adequate vitamin D intake for optimal health. Available in three great-tasting flavors, D-Mulsion 1000 can be taken orally dropped on a finger or spoon, directly into the mouth, or mixed in drinks, and is ideal for those who have difficulty or dislike swallowing capsules.