Vitamin D is usually obtained through diet or produced by the skin from the ultraviolet energy of the sun. Poor diet and lack of sun exposure can result in inadequate levels of Vitamin D for optimal health. Additionally, there are very few food sources that contain Vitamin D making it even harder to obtain adequate amounts of Vitamin D needed for superior health.
 
Ingredients 
Other Ingredients: Dibasic Calcium Phosphate, Cellulose, Stearic Acid, Silica, Cellulose Gum, Magnesium Stearate, Methylcellulose, Maltodextrin, Glycerin.