I have just been advised that glucophage is better than metformin,By a doctor whos mum is a daibetic, he says it works better for her. I have to pay more money for glugophage, and would rather spend the money if its better, I changed to generic metformin and havent so far noticed much difference. Is it definative that one is better than the other. or is it just it costs more it should be better. I buy my drugs so I can choose. and it gives me an incentive to try and get off them.