Hey, there IndyChick829 and Snoekie. Congrats on the weight loss so far. IndyChick, you should go look at Bluex's post in the thread "Not just vanity anymore, this is MY LIFE I am talking about." She's was on Metaformin for three years but she able to stop taking it this month.
I really understand the apprehension regarding leading a low carb lifestyle. It is extremely hard to change your paradigm after hearing for your entire life that fat is bad for you and low-fat, low-calorie is the only way to go. I would like to suggest you read a couple of other books. The first is Good Calories, Bad Calories by Gary Taub. I haven't read this yet [I am #1 on the library wait list], but it comes highly recommended from the seasoned veterans of this forum. The author, Gary Taub, wrote that explosive article in the New York Times, "What If It's All Been A Big Fat Lie."
http://query.nytimes.com/gst/fullpag...54C0A9649C8B63
The second is Living The Low Carb Life by Jonny Bowden. This book actually explains the physiology of the low carb diet and may help you to think differently about low-carb. He also reviews and evaluates 14 different low carb diets. Therefore, you can get an idea which diet may work best for you and your lilfestyle and needs. You should be able to get these books from your local library. I'm going to get the book you suggested, The Insulin Resistance Diet.
Good luck with your weight loss and the medicine issue. Hope you can get off them soon.