NOW Foods Liquid Vitamin D3 Extra Strength — 1000 IU – 1 fl oz

Vitamin D is normally obtained from the diet or produced by the skin from the ultraviolet energy of the sun.  However, it is not abundant in food.  As more people avoid sun exposure, Vitamin D supplementation becomes even more necessary to ensure that your body receives an adequate supply.NOW Foods Liquid Vitamin D3 Extra Strength — 1000 IU – 1 fl oz