S11 (Phenazopyridine 100 mg)
Pill imprint S11 has been identified as Phenazopyridine hydrochloride 100 mg.
Phenazopyridine is used in the treatment of interstitial cystitis; dysuria and belongs to the drug class miscellaneous genitourinary tract agents. There is no proven risk in humans during pregnancy. Phenazopyridine 100 mg is not a controlled substance under the Controlled Substance Act (CSA).
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