Riboflavin (vitamin B2) is manufactured in the body by the intestinal flora and is easily absorbed, although very small quantities are stored, so there is a constant need for this vitamin. This vitamin is essential to energy generation, nerve development, blood cell development, and the regulation of certain hormones. B2 is essential for growth, eyes, skin, nails, hair, for iron, pyridoxine, and niacin functions and releasing food energy. Together with vitamin A, it maintains and improves the mucous membranes in the digestive tract. B2 will greatly benifit people with excess stress or who have undergone recent surgery.