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A member asked:
Can taking ferrous sulfate supplements cause dark green/black stools?
3 doctors weighed in across 2 answers
Oral iron : Yes, for sure. Famous and familiar side effect. Our intestines can absorb at most 20 percent of iron from a tablet. 80-90 percent will pass mixed with stool and mucus.
Answered 12/13/2020
3.6k views
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Possibly: I'm aware that Iron digestion causes dark black or green stools. Chemical digestion is responsible for this. I would continue the Iron and inform your doctor in case they would like to perform tests.
Answered 6/7/2019
3.6k views
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Related Questions
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If you are taking ferrous sulfate, will it make your stool color black?
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Why is my stool dark green? Been for last two days. Havent been taking any iron supplements, or eaten anything green.
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Black flecks in stool. Only take magnesium supplements but didn't eat some over bbq sausages yesterday would that cause it?
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