How long does red urine last after eating red-fleshed dragon fruit?

In general, red urine after eating red-fleshed dragon fruit may last for about 1 day. The specific analysis is as follows:

Red-fleshed dragon fruit contains betalain pigments that the human body cannot absorb. As a result, these pigments are excreted through urine and feces, causing them to appear red. Typically, the body metabolizes and eliminates betalain pigments within one day, which is why red urine usually persists for about 1 day after consuming red-fleshed dragon fruit.

Patients can increase their water intake to accelerate metabolism. If other significant discomforts occur—such as frequent urination or urgency—it is recommended to seek medical attention promptly. Receiving standardized treatment under a doctor's guidance will help support recovery.