Usually, vitamin B2 tablets cannot be taken every day, but some patients suffering from vitamin B2 deficiency can take the medication for a long time under the supervision of a doctor. Vitamin B2 tablets are a common type of vitamin medication. Usually, vitamin B2 tablets can not be taken every day, especially for healthy people, long-term use will affect the body’s normal metabolism. However, for some patients with vitamin B2 deficiency, such as keratitis, lingual inflammation, seborrheic dermatitis and other diseases, you can follow the doctor’s instructions to take vitamin B2 tablets for a long time until the symptoms are relieved. Vitamin B2 tablets in the normal state of renal function almost does not produce toxicity, after taking the urine is yellow, but does not affect the continued use of the drug. It must be taken according to the recommended dosage, and must not be overdosed. It is forbidden for those who are allergic to this product, and allergic people should be cautious. In summary, when the body is not feeling well, you need to take medication under the guidance of a doctor for treatment, do not self-medication.