It does happen - sorry to hear that it actually does happen these days. Metformin does have a pretty good record - you have reason to doubt that though.
With fasting numbers at 200+ why have you not considered insulin? Insulin is as natural as you can get. Yes, there are hazards there also. Just look around and you will see how people handle them - and pretty well too. I am not on insulin but if it is a question between insulin and medications I would pick insulin. Of course, with a type 2 it is more a case of insulin and medications.