... years and about 7 months ago my dr increased it cause she said that's the normal dose. The problem is the diarrhea. I had it mild with just the one dose but now with both doses it is horrible. I sometimes don't make it to the bathroom on time. My question is can I reduce my metformin to once a day for a few days or is there something I can take for the diarrhea as I'm going to be on a long flight Friday and a few days later and am really worried about this. Thanks!