Hi
@Cobwebs - not an idiot, you (and all of us) just don't have a brain the size of Google! You can't know all the things
Only thing I have to offer is that I am on regular Metformin and the first one I ever took was just before my tea (like I have tended to take any tablets for anything, and the reaction was 'explosive' and I was not happy, nor were my family
; however a diabetic friend then told me the make sure you take it during, or straight after eating to 'surround' the pill and not let it go directly onto your stomach wall as it will absorb too quickly and with tragic consequences. I know everyone can react differently, but honestly since that first tablet I have not been affected at all.
I started on 1, at my largest meal of the day (tea) and then another at breakfast after 10 days, a third with tea for a week then up the 4, 2 at breakfast a week later, no race and gave my body time to adjust.
Might be worth a try, and maybe on a Friday or Saturday evening (or other time) when you can stay home and wait it out.
Once my low carb diet kicked in and my bloods were 'normal' my Endo cut it back to 2 a day, although I am T1/LADA, I am still only diet-controlled for now. So taking the full dose of metformin might not be forever, and it has other 'protective' qualities, hence why it was suggested I still take it even though now unlikely to make any difference to my BG.
Good luck.