Riboflavin, also known as vitamin B2, is an essential water-soluble vitamin that plays a crucial role in human health. It is involved in the synthesis of flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD), which are important coenzymes. Riboflavin is naturally present in various foods, including dairy products, eggs, meat, green vegetables, and fortified cereals.