Q:

Why does Pepto-Bismol turn your stool black?

A:

Quick Answer

The bismuth subsalicylate in Pepto-Bismol may turn the stools and the tongue black, explains Drugsdb.com. This occurs when the bismuth subsalicylate combines with trace amounts of sulfur in the saliva and intestines. The coloring is harmless, and it disappears shortly after the Pepto-Bismol treatment has stopped.

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Why does Pepto-Bismol turn your stool black?
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Full Answer

Iron supplements, blueberries and black licorice also blacken stools, according to MedlinePlus. The color may also stem from medical issues, such as internal bleeding in the esophagus or stomach. Bleeding from these areas also causes the stool appear black, shiny and sticky, according to Cigna. A physician should be contacted if a patient notices blood in the stools.

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Related Questions

  • Q:

    What does Pepto-Bismol do?

    A:

    Pepto-Bismol is used to treat indigestion, stomach upset, nausea, diarrhea and other conditions that are associated with eating excessively. A doctor may also prescribe it for other conditions, as stated by Drugs.com. As of 2014, it is still not understood how Pepto-Bismol works, but it is believed that it inhibits secretions in the digestive tract.

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  • Q:

    Can I give my dog Pepto-Bismol?

    A:

    It is perfectly safe to give Pepto-Bismol to dogs, according to petMD. It is not safe for cats, however. Pepto-Bismol is sold over the counter.

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  • Q:

    Can dogs take Pepto-Bismol?

    A:

    Dogs can take Pepto-Bismol. It is one of a handful of over-the-counter medications which are designed for human use and also safe for dogs. The main concern with giving a dog Pepto-Bismol is drug interactions, especially with aspirin, as one of the active ingredients of Pepto-Bismol reinforces aspirin's side effects.

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  • Q:

    How does Pepto-Bismol work?

    A:

    Pepto-Bismol contains the active ingredient bismuth subsalicylate, a substance that coats the gastrointestinal tract, reduces inflammation and kills bacteria such as E. coli, according to NetDoctor. Scientists are unsure how this process works. Pepto-Bismol also reduces irritation and pain by decreasing secretions in the digestive tract.

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