i was on metformin for a short period of time, however i was on it primarliy to lose weight.
it takes some time for metformin to build up in the system, and it made virtually no difference to my bsl (as bluesky has explained).
i did lose weight and that started very quickly, however at a price. i have horrible stomach cramps and pains and also very bad diahorrea. massive loss of appetite.
in my own opinion i think it works for some and not for others... if it works for you great! if not, there are heaps of other options
good luck.
(ps you must always take metformin with food)
