Vitamin B2 is often known as riboflavin. Riboflavin is a vitamin that is required for normal growth and health. Riboflavin (Vitamin B2) supports healthy vision by helping to maintain the health of the retina. Riboflavin (vitamin B2), energy vitamins, helps provide energy for your body and promotes normal metabolic function. It works to convert food into energy that can be used by cells throughout the body.