Reactive hypoglycemia

http://diabetes.about.com/od/whatisdiab ... glycem.htm

Found this hope it helps.

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It's unlikely that metformin would cause a hypo, nor is it a known cause of reactive hypoglycaemia -- it's a treatment for it.

I've had reactive hypoglycaemia since my early 20's and metformin was the treatment I was given. At that point I'd had reactive hypoglycaemia for many years and trying to control it with small frequent meals was no longer effective. I went from having three or more hypos a day to one or two a month. In my family reactive hypoglycaemia tends to precede type 2 diabetes. And just as my Father was, I was diagnosed with T2 in my mid 40's. And I still have reactive hypoglycaemia, the difference now is that rather than going low from within a normal range my blood sugar goes above normal before falling too low.