Before you begin taking a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should take this medication.
Discoloration of body fluids: Phenazopyridine produces an orange-to-red colour in the urine and feces, and may cause staining. Phenazopyridine may cause discoloration of other body fluids and staining of contact lenses has been reported.
If the medication has been broken or held in the mouth before swallowing, it may cause tooth discoloration. If your skin or eyes turn a yellowish colour, stop taking the medication and contact your doctor immediately.
Laboratory tests: This medication may interfere with certain laboratory tests. If you are having lab tests done, make sure your doctor knows that you take this medication.
Length of treatment: Take phenazopyridine for only 2 days. If symptoms persist beyond 2 days, contact your doctor.
Medical conditions: If you have an inherited condition called G-6-PD deficiency, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Pregnancy: This medication should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking this medication, contact your doctor immediately.
Breast-feeding: It is not known if phenazopyridine passes into breast milk. If you are a breast-feeding mother and are taking this medication, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.
Children: The safety and effectiveness of using this medication have not been established for children.
Seniors: The safety and effectiveness of using this medication have not been established for seniors.