Vitamin D is a natural vitamin. There is more than one type of Vitamin D. There is Vitamin D2 (calciferol), and Vitamin D3 (cholecalciferol). Both types of vitamins are able to produce close results, however Vitamin D3 is more potent.
Vitamin D can be absorbed into the human body as in direct sunlight or sometimes trace quantities in milk. In this day and age it is sometimes difficult to ensure each individual is able to get adequate sunlight to absorb the Vitamin D. Due to the amount that is recommended for the human body to consume, Vitamin D can be found as a capsule which can be beneficial.
Exposure of Vitamin D is necessary for the human body to function. Many signs can indicate a Vitamin D deficiency. These signs vary from person to person. They may include dizziness, fatigue, and dry skin to name a few. It is best to talk with your doctor about any deficiencies you may have.
Vitamin D is used for developing and keeping strong bone structure along with healthy teeth. It is absorbed into the body and then disbursed where it is needed. As with any additional supplement it is best to consume through a healthy diet.