I was on Duromine (had to stop TTC for a while) and dropped 5 kgs on 10 days.
I have to be carefull with my sure intake as I have low blood sugar level rather than the other way around which is really annoying when it comes to losing weight but I am eating low gi foods and upping my intake of complex carbs rather than "bad" sugars although I still sit at about 3.6-4.2 which is frustrating.
I tend to drink too much water so I can't do much more there I have ~6ltrs per day.
BTW what is Metformin?