Β2, also known as Riboflavin, is a water-soluble vitamin that plays a crucial role in energy production and the metabolism of fats, drugs, and steroids. It is part of the B-vitamin complex and is essential for maintaining healthy skin, eyes, and nerve functions. This vitamin is found in various foods, including dairy products, eggs, green leafy vegetables, and fortified cereals. A deficiency in Riboflavin can lead to symptoms such as sore throat, redness and swelling of the lining of the mouth and throat, and cracks on the outsides of the lips, known as cheilosis.