Eat vitamin B2 urine yellow, is the drug metabolism after the normal phenomenon, do not worry too much, the drug stop using, urine can return to normal. Vitamin B2, also known as riboflavin, is a common water-soluble vitamin, after taking vitamin B2, will be dissolved in the urine. If the intestinal function is poor, take the vitamin B2 is not completely absorbed by the intestine or part of the direct dissolution in the urine. With the urine discharge, there will be the phenomenon of yellow urine, after the drug stops, it will return to normal. When taking vitamin B2 can drink more water, can promote vitamin B2 discharge. When the drug is stopped after the yellow urine, a short period of time can not be self-recovery, you need to consult a doctor in a timely manner, to clarify the cause, targeted treatment.