Sorry I know im not from Australia but there is a HUGE PCOS Thread about this ... here it is if you want to check it out .
http://www.lapbandtalk.com/f17/those...ve-pcos-44999/
I know if you search through it in the later pages they talk about Metformin .
there is a lot of useful info on it .
There is another thread here for you as well
http://www.lapbandtalk.com/f17/quest...os-help-47970/
I think that is it . there are few other smaller threads but that first one has a lot of info about Metformin , Feel free to jump in there someone will answer your question for ya .
HTH
Mindy