I have been diet controlled about 13 years with type2, but last few GP long term blood sugar counts have gone up. Not happy but started 500mg of metformin 3 weeks ago, 1 week of 1 a day and now had 2 weeks of 2 a day. Gone down hill with some discomfort of stomach pains at first increasing to feeling sick and stomach pains and keeping me awake at night and being tied. Contacted my GP today and will try me on a slow release drug so hopefully I will start to feel a bit better soon. It does seem the cheap version which is commonly known to cause major discomfort is always tried first!