Vitamin B2, also known as Riboflavin, is a water-soluble vitamin that cannot be synthesized by the human body itself and must be supplied by food. It is indispensable for maintaining the normal physiological function and metabolism of the human body. Vitamin B2 participates in the normal growth of cells, promotes wound healing, strengthens nails and hair, is an important component of coenzymes, participates in the synthesis and metabolism of carbohydrate, protein and fat, and participates in the composition of red blood cells and the transport of iron, which helps to prevent and treat Iron-deficiency anemia. At the same time, it also has a certain antihypertensive effect. It is mainly used to prevent and treat Angular cheilitis, glossitis Dry cleft lip, Conjunctivitis, scrotum and Seborrhoeic dermatitis.