Eating foods rich in red pigments may turn your urine red, most commonly red dragon fruit. There are many medications that can also turn urine red, such as the most common ones like rhubarb, phenolphthalein, rifampin, tetracycline ones, phenolsulfonephthalein, and purines, which can cause red urine. Some drugs can also cause hematuria, such as cyclophosphamide, allopurinol, heparin, bicoumarin, and aspirin and poliovin, which have some damage to blood vessels and tend to cause blood vessels to be more permeable, and lead to hematuria. Especially with the current large use of aspirin and Polivic, many patients may experience a reddening of the color of their urine with a little exercise.