Taking vitamin B2 for mouth ulcers certainly helps. vitamin B2, also known as riboflavin, is a water-soluble vitamin. Vitamin B2 is involved in a series of physiological processes that promote body development, cell regeneration, normal growth of skin, nails and hair, help prevent and eliminate a series of inflammatory reactions in the mouth, improve vision, reduce eye fatigue, influence the absorption of fluids, and influence biological oxidation and energy metabolism in combination with other substances. Combination with other substances can also affect biological oxidation and energy metabolism. Vitamin B2 deficiency due to insufficient supplementation can also trigger a series of pathological processes, such as skin mucous membrane cracks, erosion, stomatitis, labyrinthitis, keratitis, oral mucosal ulcers, and tongue inflammation in the oral area, and blepharitis and conjunctivitis in the eyes, and scrotal inflammation in the skin and labyrinthitis in women are also related to vitamin B2 deficiency. How to supplement the right amount of vitamin B2? Mainly through various foods rich in vitamin B2. For example, dairy products, animal liver, kidney, egg yolk, eel, and some vegetables, such as carrots, shiitake mushrooms, purple cabbage, celery, and some fruits are also compounded with vitamin B2, like oranges, oranges, etc.