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Phenazopyridine is a chemical which, when excreted into the urine, has a local analgesic effect. It is often used to alleviate the pain, irritation, discomfort, or urgency caused by urinary tract infections, surgery, or injury to the urinary tract. Phenazopyridine was discovered by Bernhard Joos, the founder of Cilag. ==Medical uses== Phenazopyridine is prescribed for its local analgesic effects on the urinary tract. It is sometimes used in conjunction with an antibiotic or other anti-infective medication at the beginning of treatment to help provide immediate symptomatic relief. Phenazopyridine does not treat infections or injury, it is only used for symptom relief.〔http://www.wcrx.com/pdfs/pi/pi_pyridium_plus.pdf〕〔http://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=ae0f0808-51ed-43b9-86a3-b947c42da89f〕 It is recommended that it be used for no longer than the first two days of antibacterial treatment as longer treatment may mask symptoms.〔 Phenazopyridine is also prescribed for other cases requiring relief from irritation or discomfort during urination. For example, it is often prescribed after the use of an in-dwelling Foley catheter, endoscopic (cystoscopy) procedures, or after urethral, prostate, or urinary bladder surgery which may result in irritation of the epithelial lining of the urinary tract.〔 The American Urological Association has recommended the use of phenazopyridine as a first stage treatment for interstitial cystitis.〔https://www.auanet.org/education/guidelines/ic-bladder-pain-syndrome.cfm〕 This drug is not used to treat infection. It provides symptom relief during a UTI, following surgery, or injury to the urinary tract.〔 Long term use of phenazopyridine can mask symptoms. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Phenazopyridine」の詳細全文を読む スポンサード リンク
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