Concerning.: Iron and bismuth medications can cause black stool. Black tarry, malodorous stool can be due to gastrointestinal bleeding. Can't tell you if you have HIV issues - especially since you haven't been tested. See you take brufen - this can sometimes cause GI bleeding. Please seek prompt medical evaluation. Take care.
Answered 8/8/2017
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A doctor has provided 1 answer
5 doctors weighed in across 2 answers
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