I simply refused to take any medication for diabetes, I am a bit concerned about what exactly its supposed to achieve. - ie does the medication make you excrete the excess sugar and that brings your levels down - or does it simply move the sugar from your blood stream to somewhere else its not wanted ? both dietdoctor.com and Jason Fung suggest its the latter.
My own figures came down from 90 to 44 in 5 months pure LCHF diet no medications, I have also come off one blood pressure medication so far.
I think in general it might be that metformin is not making as much difference as people think it is compared to the diet switch - the problem is that when you do both metformin and diet switch together you do not know how much of the effect is for either. I think my inclination would be to try not to be frightened of getting off the metformin and continue with the LCHF diet as early as possible - you can always go back onto it if necessary.
The other thing which my own experience shows is that whilst weight loss is hugely important, the diet can still get someone who seemed to be severely diabetic (i.e. me ! with my hba1Cof 90) back into the near normal range within a short space of time . My BMI is still 33 - so I have LOTS more weight still to lose to get into the normal range for weight.
