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phenazopyridine

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phenazopyridine /phen·a·zo·pyr·i·dine/ (fen″ah-zo-pir´ĭ-dēn) a urinary tract analgesic, used as the hydrochloride salt.
phenazopyridine [fen″ah-zo-pēr´ĭ-dēn]
a urinary tract analgesic, used as the hydrochloride salt; administered orally.
phenazopyridine
an azo dye, used as a urinary analgesic and antiseptic in humans. Causes hemolytic anemia and hepatic injury in cats.
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Urine nitrites can be falsely elevated due to contamination, air exposure, or phenazopyridine, and can be falsely negative due to elevated specific gravity, elevated urobilinogen levels, nitrate reductase-negative bacteria, PH < 6.
UA and culture do not agree by Baer, Daniel M. / Medical Laboratory Observer
The following drugs and drug classes may interact with the test to cause questionable results: Aspirin (large amounts) Riboflavin Nalidixic acid (Neg Gram) Sulfa drugs (eg, sulfonamides) Nitrofurantoin (eg, Furadantin) Vitamin C (ascorbic acid) Phenazopyridine (eg, Pyridium) Guidelines for Use Follow instructions on the label exactly.
Glucose (Urine) Tests-Drug by Robert Baird / Health, general community
Specifically, the agency noted six potentially serious and unexpected AEs dating back to 1999 for products, such as, digoxin, phentermine, and phenazopyridine, which were not reported to FDA.
Actavis Totowa, LLC, Little Falls, NJ, Aug. 15 (New Jersey) by Warning Letter Bulletin
 
 
 
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