LIFENOW Vitamin D3 2000 IU Supplement (60 Capsules)Vitamin D3 or cholecalciferol is a group of fat soluble vitamin that promotes the intestinal absorption of calcium and other minerals such as iron, magnesium, phosphate and zinc. The most important source of vitamin D3 is sunlight. The skin synthesizes vitamin D3 when it is exposed to sunlight. Extensive indoor living and a strict vegetarian diet are the two main reasons for vitamin D3 deficiency. Lifenow is one amongst the best brand for quality