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What Causes Dark Stool After Taking Pro-biotic CD?

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Posted on Wed, 16 Sep 2015
Question: hello,
I have been on amoxicillin 500 mg twice a day for less than a month now. I started on natures bounty probiotic CD will 2 billion live probiotic cultures yesterday. today I experienced very dark, maybe black stools. is this maybe a side effect for the probiotic or should I be worried?

Thank you.
doctor
Answered by Dr. T Chandrakant (5 hours later)
Brief Answer:
Please get stool tested as advised. Indication for Amoxicillin?

Detailed Answer:
Hi.
Thanks for your query.
Read and understood that your are taking Amox for a long time in a twice a day dosages and you took Probiotic CD yesterday and got dark may be black stools.

Usually probiotics are not known to give such a problems but since it contains the live organism can cause a problem due to altered bacterial flora. You are already taking Amoxicillin which might have caused disturbed bacterial flora.

The most important factors are:
What is the indication of taking Amoxicillin for so long?
Get the stool test done for 3 consecutive days from now on including the tests for occult blood to know whether there is a bleeding in the GI tract causing the black stools (malena) or this is just a normal altered stool.

The tests will guide about the future course of action.

I hope this answer helps you.
Waiting for your feedback.
Note: For more detailed guidance, please consult an Internal Medicine Specialist, with your latest reports. Click here..

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
Dr.
Dr. T Chandrakant

General Surgeon

Practicing since :1984

Answered : 19777 Questions

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What Causes Dark Stool After Taking Pro-biotic CD?

Brief Answer: Please get stool tested as advised. Indication for Amoxicillin? Detailed Answer: Hi. Thanks for your query. Read and understood that your are taking Amox for a long time in a twice a day dosages and you took Probiotic CD yesterday and got dark may be black stools. Usually probiotics are not known to give such a problems but since it contains the live organism can cause a problem due to altered bacterial flora. You are already taking Amoxicillin which might have caused disturbed bacterial flora. The most important factors are: What is the indication of taking Amoxicillin for so long? Get the stool test done for 3 consecutive days from now on including the tests for occult blood to know whether there is a bleeding in the GI tract causing the black stools (malena) or this is just a normal altered stool. The tests will guide about the future course of action. I hope this answer helps you. Waiting for your feedback.