*Vitamin D is one of the most common nutrient deficiencies in humans.
3 month supply of quality Vitamin D-3 5000 IU to help you fight against fatigue. Vitamin D is a fat-soluble nutrient. "It is one of the 24 micronutrients critical for human survival. Supplemental Vitamin D is associated with a wide range of benefits, including increased cognition, bone health, immune health, and well-being." Numerous enzymatic pathways require Vitamin D to complement a person's need for quintessential nutrients. After proper supplementation, people deficient in Vitamin D may also experience increased testosterone levels.