drugs that can change stool color
November 2007
Many patients are surprised by drugs that can change stool color.
Black stools are common with iron supplements, charcoal, or bismuth (Pepto-Bismol, Kaopectate, etc).
Red or orange stools can be seen with phenazopyridine, rifabutin, rifampin, or antacids with aluminum. Cefdinir (Omnicef) can interact with iron in baby formulas to produce reddish stools.
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