YMMV – Your mileage may vary. I alternate between metformin and bitter melon pills and they are great with some exercise and a moderate carbs diet. My fasting levels are usually around 5.5.
Of course when I eat too much, the medication is of no help, so the pills must go with a sensible diet... May be a good idea to keep a journal so you know when you spike and when you don't. Then, by elimination, you will come to the best medication/diet combination for you.
In a worst case scenario, you have to check whether you have progressed to type 1.
Good luck.