Hi netman, welcome back! Well, you have discovered a truth about
type 2, that diabetes responds quickly to diet and exercise. The diet and exercise will cause weight loss and lower blood sugar. The weight loss and lower blood sugar will help your body reduce possible side effects of diabetes.
Typical side effects of metformin are typically gastro-related, acid stomach, upset stomach, that kind of thing. I don't know if your first experience was related to the medication or not. To avoid these kinds of side effects, the usual advice is not to eat a lot of carbs or greasy food. This may vary from person to person.
There has been some recent 'good' news about
metformin not only in relation to diabetes but for other health protection. Metformin is usually the first choice for a new type 2 along with a low carb diet and a more active lifestyle. This medication helps your body use the insulin you still make more efficiently. And, yes, I've also read that any help for the pancreas will help stop the beta cells from burning out. If they burn out, this means they won't produce insulin which means you have to have insulin.
Metformin will not cause hypoglycemia as some other medication will. However, there are many other oral drugs that a doctor can prescribe before insulin. So, I'm perplexed why your doctor would tell you there's not much else for her to prescribe before putting you on insulin (which you may not need!). What your body can use is help with a better and more effective use of the insulin you're still producing, and that's what metformin does.
If I were you, I would give it another try. Take it with food so it lessens the chance of gastric upset.
Congratulations on all the improvement. There have been several new books on diet's effect on diabetes. I bought Richard Bernstein's
Diabetes Solution which is really thorough and informative. Keep us updated, ok? By the way, did you ever find the name of the dark chocolate you were eating?