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A member asked:

Does tetracycline cause dark or black stool?

A doctor has provided 1 answer
Dr. Lori Semel answered

Specializes in Pediatrics

Yes: Tetracycline taken orally can cause dark or black stools.

Dr Altman and 2 doctors agreed

Answered 8/19/2020

3.8k views

Thank

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Why is tetracycline used as an anti-diarrhea agent when it can cause diarrhea as a side effect?

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Yesterday, I got injections of tetracycline (not with a needle) in the gums around two molars. Vision is slightly blurry. Is tetracycline the cause?

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