How long should vitamin B2 be taken before discontinuing for angular cheilitis?

Vitamin B2 plays an important auxiliary role in the treatment of angular cheilitis. For patients with angular cheilitis, the duration of vitamin B2 administration varies depending on the severity of the condition. Generally, if angular cheilitis is caused by a deficiency in vitamin B2, administration of vitamin B2 tablets for 3 to 10 days is sufficient before discontinuation, as this period is usually adequate to improve the vitamin B2 deficiency. If the patient's condition is more severe or there are other concurrent factors, the treatment duration may need to be extended to 7–30 days, or even longer. During vitamin B2 supplementation, patients should follow the recommendations of their physician or nutritionist to ensure appropriate dosage and avoid potential risks associated with excessive intake. Additionally, treatment for angular cheilitis should include comprehensive measures such as topical medications alongside oral vitamin B2 to accelerate recovery. If any concerns arise, please consult a relevant physician.