Phenazopyridine is primarily used as a urinary analgesic to relieve pain, burning, discomfort, and urgency caused by urinary tract infections (UTIs) or other urinary conditions. It works by exerting a local anesthetic effect on the urinary tract mucosa, providing relief while the underlying infection is treated with antibiotics. It is often prescribed for short-term use during the initial stages of UTI treatment to alleviate symptoms quickly. However, it does not treat the infection itself and should always be used in conjunction with appropriate antimicrobial therapy. It is also sometimes used in diagnostic procedures involving the urinary tract to reduce discomfort. Patients are advised to monitor for potential side effects, such as changes in urine color, which is a common and harmless effect of the medication.