Within the last few weeks I have started to cut down on Metformin due to the successful control of my blood sugar levels, I was just cutting by missing a dose twice a week but this week I have cut from 500 mg twice a day to 500 mg just once in the morning after breakfast, I started this 7 days ago and at first I was OK. Yesterday and today has seen my health turn to the worst, I have been experiencing nausea and an upset stomach and all the side effects I had 14 months ago when I started taking this drug! But what is really worrying me is the psychological impact it has had on me with the onset of anxiety and depression. Could the 50% cut I have made resulted in this? Has anyone else had this experience? My blood sugar levels continue to be OK (at the moment). Please forgive me if I don't respond to all responses, I find the site difficult to navigate.