There are no magic pills. Metformin has plenty of side effects.
Eliminating body fat (so that your waist gets smaller), building muscle, and eating a diet rich in fruits, veggies, nuts, heart healthy fats, and complex carbs is the way to defeat insulin resistance. Your body will thank you by stabilizing your blood sugars, lowering your blood pressure and improving your lipid profile- you'll probably look better in your clothes too.
Lanie gave you some great advice! Best of luck to you!
I just want to live happily ever after-every now and then. Jimmy Buffett