Hello,
Dark stools after starting Norflox can occur, but usually antibiotics alone donât cause black stool. The common reasons are:
Iron or bismuth containing medicines (if taken alongside).
Gastritis or minor stomach irritation from antibiotics which can sometimes lead to darkening.
Hidden gastrointestinal bleeding (from stomach/upper intestine), which needs to be ruled out if stool is truly black, sticky, or foul smelling (tarry).
ð What you should do:
Stop self-medication and continue only what your doctor has prescribed.
Drink enough fluids and take Rinifol regularly to protect your gut flora.
If stools remain dark black, become sticky/tarry, or you notice weakness, giddiness, abdominal pain, consult your doctor immediately for stool test and possibly endoscopy.
It may be just a side effect, but since black stool can also indicate bleeding, it is better to get it checked rather than ignore.
You can connect with me here for further review, or reach me directly at eight five two seven one six four six seven seven.
â Dr. Romain Rajan
General Physician
Answered2025-08-22 11:55:09
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