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A 45-year-old female asked:

started taking amoxicillin 2 days ago for sinus infection. stools normally come out number 5 on bristol stool chart. now formed and in 1 piece. why?

1 doctor answer3 doctors weighed in
Dr. Frank Kuitems
Internal Medicine 39 years experience
Stool change antibio: It is common for the consistency and frequency of bowel movements to change when taking antibiotics. Antibiotics kill some naturally occurring bacteria in the intestines. This change in the balance of bacteria in the intestines causes changes in stools most common causes diarrhea but it could also cause less frequent and firmer bowel movements

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Last updated Jun 25, 2015

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