A member asked:

I read that metformin causes diarrhea but i have constipation. what's going on?

A doctor has provided 1 answer
Dr. Erik Borncamp answered

Specializes in Wound care

Carbs vs fat: Metformin decreases the absorption of carbs from your GI tract so if you eat a lot of simple carbs they will stay in your intestine, hold a bunch of water and cause a lot of diarrhea. If you are avoiding a lot of simple carbs (which you should) and you eat a diet high in fat (which slows your intestines) you will end up severly constipated. Increase you fluid and fiber to replace the carbs.

Answered 12/25/2019

5.2k views

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