Riboflavin, also known as Vitamin B2 is an easily absorbed colored micronutrient with a key role in maintaining health in humans and animals. Riboflavin is yellow or yellow-orange in color and in addition to being used as a food coloring, it is also used to fortify some foods. It is used in baby foods, breakfast cereals, pastas, sauces, processed cheese, fruit drinks, vitamin-enriched milk products, and some energy drinks.