Per Dr. Bernstein the Glucophage brand is more effective than generic metformin based on his practice experience. I get every time a different company not even the same one. I am not sure if we can request Glucophage in particular or whether its even available in UK?
The metformin used in the U.S for conditions like polycystic ovaries before 1999 was the basic metformin not long release. The UK started long release based on manufacturing specifications. Which was for diabetes.
Myself have used all variations. When all weights. Myself I feel more benefit with regular exercise and stable meals. Even working shifts and in exhaustion.
I have used all variations with mixed or separate insulin too.
Currently I'm using regular metformin from any pharms. Long release isn't recommended after Roux-en-y ops due to where the med works as it's releasing. Also side effects can be more difficult to treat with long release. I may know even more about metformin side effects after removal of my gallbladder.
Dr Bernstein is absolutely brilliant at showing the light on best diet for Diabetics. He's an inspiration. He believes we should be treated as individuals when medicating for diabetes.