Riboflavin, also known as vitamin B2, is a vitamin found in food and used as a dietary supplement. It is involved in many processes in the body and is necessary for normal cell growth and function. Vitamin B2 helps break down proteins, fats, and carbohydrates. It plays a vital role in maintaining the body’s energy supply. Riboflavin helps convert carbohydrates into adenosine triphosphate (ATP). The body produces ATP from food, and ATP produces energy as the body requires it. It can be found in certain foods such as milk, meat, eggs, nuts, enriched flour, and green vegetables (see: Wikipedia).