Do not take this medication if you are allergic to phenazopyridine, or if you have kidney disease.
Phenazopyridine will treat the symptoms of a urinary tract infection, but this medication does not treat the actual infection. Take any antibiotic that your doctor prescribes to treat your infection.
To avoid stomach upset, take phenazopyridine with food.
Phenazopyridine will most likely darken the color of your urine to an orange or red color. This is a normal effect and is not cause for alarm unless you have other symptoms such as pale or yellowed skin, fever, stomach pain, nausea, and vomiting. Darkened urine may also cause stains to your underwear, which may or may not be removed by laundering.
Phenazopyridine can also permanently stain soft contact lenses, and you should not wear them while taking this medicine.
Do not use phenazopyridine for longer than 2 days unless your doctor has told you to.
Stop taking this medication and call your doctor at once if you have pale skin, fever, confusion, yellowing of your skin or eyes, increased thirst, swelling, or if you urinate less than usual or not at all.