Yellow urine after taking multivitamins is a relatively common clinical phenomenon, especially after taking B vitamins, which tends to cause the urine color to become yellow, there is no need to be particularly nervous, and do not worry too much. After stopping the drug, the patient’s urine will gradually return to normal color. If the urine is still yellow after stopping the vitamins for a long time, it should be noted that it may be caused by other diseases. For example, urinary tract infections can lead to yellow, cloudy urine, and the patient may also experience symptoms such as frequent urination, urinary urgency, painful urination, and even hematuria. Antibiotics should be used actively for treatment to achieve better results.