Mega Food Vitamin D3 - 1000 IUSupports healthy immune system & strong bones and promotes a sense of overall well being D3 is a powerful nutrient that performs many roles in the body, and we consider vitamin D3 a foundational supplement Our bodies manufacture vitamin D when skin is exposed to sunlight but, with many people spending time indoors, D3 deficiency is one of the most common nutrient deficiencies in the United States Delivers 25 mcg (1000 IU) of cholecalciferol per