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  • Title: Multiple adverse effects of pyridium: a case report.
    Author: Haigh C, Dewar JC.
    Journal: South Med J; 2006 Jan; 99(1):90-2. PubMed ID: 16466130.
    Abstract:
    Pyridium (phenazopyridine hydrochloride) is often prescribed as an analgesic in patients following trauma, surgery, or infections of the urinary tract. Pyridium toxicity has been previously reported, however, most cases result in a single adverse effect. Herein the authors describe an elderly patient who presented with simultaneous multiple adverse effects, including a previously undocumented myelosuppressive pancytopenia.
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