Solgar Vitamin D3 (Cholecalciferol) 4000 IU (100 µg) Vegetable Capsules is a high-quality formula that provides vitamin D in the form that is best processed by the body, D3. The benefits of the "sunshine vitamin" are many and well documented, but it is especially indicated for a healthy immune system. Vitamin D3 available. It is obtained by exposure to the sun and from foods rich in vitamin D. More than a billion people worldwide have very low levels of vitamin D. In addition to changing your diet and lifestyle, take a vitamin D supplement. It's a good way to top up your reserves, especially during the winter months. Vitamin D contributes to: the normal functioning of the immune system, the maintenance of normal bone and tooth structure, the normal absorption and use of calcium and phosphorus, the normal level of calcium in the blood, and the maintenance of normal muscle function.. It is recommended to consume as a dietary supplement for adults, take one (1) vegetable capsule daily, preferably with food or as directed by a physician. Food supplements should not be used as a substitute for a balanced and varied diet and a healthy lifestyle. Do not exceed the recommended daily dose. Keep out of reach of young children. Store at room temperature.