Q. I took protein supplements and I passed black stools. Is it because of the protein powder?

Answered by Dr. Kini and medically reviewed by iCliniq medical review team.

 

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Hello doctor,

I am 16 years old. I have started taking a protein supplement since yesterday. I passed black stools this morning. Is this black color because of the protein powder?


Related Questions:
Do I need vitamin D and iron supplement?
Can I take protein powder to gain weight?
I am anemic even after taking iron supplements. Why?
 

Dr. Kini
MBBS., MD., DM
Medical Gastroenterology

Hi,

Welcome to icliniq.com.

Protein supplements do not cause black stools. Black stools, also known as melena, occur if there is bleeding in the upper gastrointestinal tract.

There are chances of black stools if you take medications like Pepto-Bismol or Iron supplements. So, if you are not on Pepto-Bismol or Iron supplements and if there are persistent black stools which is sticky, bulky and offensive, then it requires immediate attention.

Get an upper gastrointestinal endoscopy and share your reports.

 
 
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