Nature's Essentials™ Vitamin D3 utilizes Cyclosome™ delivery technology creating the most advanced Vitamin D3 complex available today. Our Cyclosome™ delivery technology encompasses the naturally derived cholecalciferol into a liposomal hydrophilic complex that creates a vortex of enhanced solubility and optimum bioavailability. Vitamin D3, often referred to as the “Sun Vitamin,” is an essential nutrient that supports the immune system, strength and power in muscles, helps calcium absorption to develop strong bones and teeth, and helps with overall well- being and mood. Combining Vitamin D3 with other nutrients supports absorption in the body as well. Nature's Essentials' Vitamin D3...the next generation of Vitamin D3!