The phenomenon of yellow urine after taking vitamin C is caused by the metabolic effect of the drug. Because the metabolism of vitamin C occurs in the body, and then the metabolic products are excreted through the kidneys, these metabolic products are yellow, and after entering the urine, it will cause the urine to be too yellow, which is a normal physiological phenomenon. It is recommended that by drinking more water and eating more fruits and vegetables, it will slowly improve. But you need to continue to observe and stop using vitamin C, whether the phenomenon of yellow urine can be changed, whether the normal color is restored. Also consider whether there are other symptoms, such as frequent urination, urinary urgency, painful urination and other urinary tract irritation, if the combination of these symptoms should be considered to be caused by urinary tract sense, and vitamin C may not have a direct relationship. The actual fact is that you can find a lot of water to drink, which can significantly reduce the phenomenon of yellow urine and prevent urinary tract infections.