Vitamin D (Cholecalciferol)

Vitamin D is a vitamin that is stored in the fat cells and aides in bone development along with the regulation/production of calcium, phosphate, and magnesium. According to the National Institutes of Health vitamin D deficiency is a global issue and has been associated with the cause of certain types of cancer. If you have been feeling fatigued and you have not been getting sun exposure, supplementation is necessary.