The yellowing of urine after oral intake of Aleve is mostly due to the use of vitamin B, which causes the urine to stain. The use of vitamin B complexes or vitamin B preparations alone can appear yellowish urine, which is a normal manifestation of taking medication, only need to drink more water appropriately. Clinically there are many drugs that can cause yellow staining of urine after taking, such as furan antibiotics, or sulfonamide antibiotics. After oral intake, the phenomenon of yellowish urine color will occur. This is because the drug enters the body and is metabolized, and its metabolite form or the original form will be excreted from the urine through the kidneys, thus showing a yellowish color. No treatment is required, and if not necessary, drug intake can be stopped and the urine color can return to normal. However, if you need to take the medication continuously, just make sure that you drink a good amount of water, and it is more appropriate to keep the daily water intake at about 1500ml.