It is a common phenomenon that the urine turns yellow after taking vitamin B, because after taking vitamin B will be excreted through the kidneys, the urine will turn yellow, which is a normal phenomenon and is not caused by certain diseases. So there is no need to be too nervous about the urine turning yellow after taking vitamin B. The color of the urine will gradually return to normal after timely discontinuation of the drug. If the patient’s urine is still yellow after stopping vitamin B, and accompanied by frequent urination, urinary urgency, painful urination and other symptoms, you should pay attention to the hospital to undergo tests to clarify the existence of disease, such as urine examination found urine white blood cells elevated may be caused by urinary tract infection, should be actively anti-infection treatment.