Eating furazolidone tablets appeared urine yellow stain, which belongs to the oral administration of sulfonamides after a common manifestation, belong to the drug staining caused by, is not a pathological condition, do not need to worry too much. Furazolidone and other sulfonamides are higher in concentration in the urine after oral administration, so they can achieve the purpose of treating urinary tract infections, and the effect is better than other drugs, and can be used as the first choice of drugs for the treatment of urinary tract infections. During the treatment, as long as you maintain a certain amount of water intake and maintain a certain amount of urine. The yellowish color of urine after stopping the drug can be gradually recovered. Daily water intake is recommended to be maintained at about 1500-2000ml, and during the period of medication, oral sodium bicarbonate tablets can be taken to alkalize the urine if necessary, to avoid the formation of crystals in the urine. During the period of taking the medicine, pay attention to the diet to light and easy to digest, avoid spicy stimulation and other diet, after stopping the medicine, urine color can gradually return to normal.