Vitamin B2 Tablet dosage is usually recommended for adults as a daily intake of 1 to 2 tablets three times a day. Vitamin B2, also known as riboflavin, belongs to the B vitamins, is slightly soluble in water, and is a component of the flavonoid cofactor. When the body lacks vitamin B2, it may cause the body’s metabolism to malfunction, and symptoms such as xerostomia, lingual inflammation, stomatitis, conjunctivitis, and seborrheic dermatitis may occur. In general, as long as the diet is well-balanced, adequate vitamin B2 can be consumed from food, commonly including fruits such as apples, bananas, red grapes, pears, kiwis, oranges, and vegetables such as carrots, broccoli, flat mushrooms, string beans, lettuce, tomatoes, and kelp, soybeans, chestnuts, walnuts, etc., and there is no need to take additional supplementation through medication. Vitamin B2 tablets in the state of normal renal function almost does not produce toxicity, after taking the urine is yellow, but does not affect the continuation of the drug. Contraindications are not clear. If the treatment of the disease requires, the drug should be used in accordance with the doctor’s instructions, so as not to cause uncomfortable symptoms.