Sorry I am late responding - after your doctor appointment. You did not say how low your blood sugar was going. I have been diabetic for 20 years (I have been on insulin for 14 years)and I have a coworker with a daughter that overproduces insulin and gets sugar lows, so I am familiar with both sides of this issue. First I would ask if you have a glucose meter. You need one if you do not have one. If your insurance will not cover a meter and test strips, Walmart has them for a reasonable price. Personally I have found that even now I cannot tell if my shaking and sweats is due to low blood glucose or anxiety. I usually get low blood sugar symptoms when I am down around 60 mg/dl but I can also get them around 80 if my glucose is falling rapidly. In either case you need to treat for low blood glucose.
There are a few products that directly affect insulin resistance - such as Actos however these products also prevent your liver from supplying glucose when your glucose levels drop and can make you hypoglycemia progress to lower values even quicker than now. There are a lot of different systems involved in balancing the glucose levels but determining which system is causing the problem is complicated and may take a lot of time.
My suggestion is probably the first one you got from your doctor. Watch your diet. If you eat a large meal with lots of carbs (even slow digesting carbs) you glucose can rise to a very high number because of your insulin resistance. You should check your insulin levels at 1 to 2 hours after a meal. If they are high (over about 250 mg per dL) you may well have a low about 4 or 5 hours after the meal. The best way to avoid this is to use more protein at your meals with a small amount of complex carbs from vegatables like green beans. You need carbs so obtain them from small snacks of complex carbs throughout the day half way between meals and at bedtime. Only complex carbs at bedtime nothing with sugar. You need to check your gloucose every 2 or 3 hours when you first start this method because for some people it doesn't work and may make it a little worse. For most people it will work and should help you a lot until they figure out what is going on and if there is any other way to treat it. Each person is different and so you will need to do a lot of testing in the beginning while you vary your diet. Also keep track of which foods you eat. I have found that some low glycemic foods cause my glucose readings to increase rapidly while other high glycemic foods do not. Everyones body is different so you need to experiment with various foods and do the testing afterwards. Don't believe that everything you read applys to you, we are all different. Don't skimp on testing to save a few dollars. It's your life and you're worth it. Good Luck.