But holy DAMNED does it give diarrhea. (Diabetic here, not using it since a couple of years)
Anyway, I'm among the lucky 80% of those without side effects. I'm not diabetic; I take it for biohacking reasons.
Did you just say to your doctor, "Hey, doc, I'm trying to live forever here, can you hook me up with some metformin?"
I often wonder about this, when it comes to folks using drugs for off-label purposes. I know there are doctors that are amenable to prescribing things like anti-depressants on patient request, but a diabetic drug seems a harder sell.
I'm pretty sure if you are actually prescribed these for diabetes by your GP you'll pay a fraction of that cost under the NHS.
I had the same side effects, but that's ok because I'm actually T1, not T2.