After I take metformin, I alway feel stomach ache. I don't understand why. Please let
me know what I can do
Samuel Grossman, BS Pharm, Pharm.D, CDEPROFESSIONAL
Answered 5/23/2014 by Samuel Grossman, BS Pharm, Pharm.D, CDE
Patients that take metformin often complain of nausea or stomach ache or diarrhea. In my experience, taking metformin after meals, which mean, with the last bite of the meal, helped patients reduce these symptoms.