The appearance of yellow urine after taking multivitamins is a relatively common clinical phenomenon, especially after taking B vitamins, which can easily lead to yellow urine color, and there is no need to be particularly nervous or worried. After stopping the medication, the patient’s urine will gradually return to its normal color. If the urine is still yellow after stopping the vitamins for a long time, you should pay attention to the fact that it may be caused by other diseases. For example, urinary tract infections can cause yellow urine and cloudy urine, and the patient may also experience frequent, urgent, painful or even bloody urine. The patient should be treated with antibiotics actively to get better results.