Hi Katherine,
Yes, I'm on Metformin as well - 4 x 500Mg/day
(I'm also on Simvistatin, Lipantyl, Niaspan, Aspirin and Ramipril) 18 months ago, I didn't even take a pain killer from one year to the next!!
I've turned into a real 'junkie' and a micro drain on the NHS :)
I am not overweight, but...