What exactly are you trying to control your blood sugar to?

Before I went paleo, I was around 110 on average, after paleo for a month (and losing weight) I was down to the mid 90's. Now I'm around 88 (before I stopped measuring). Not exactly diabetic/intolerant, but I liked the way it went.

I've used R-Alpha Lipoic acid to get into ketosis faster and to help offset carbs in a meal. It's pretty expensive though. I don't know I would use it on an ongoing basis to control blood sugar. It's a bit of a crutch, and can make your sugar too low. Cinnamon's also supposed to help, but seems a bit hit or miss from what I've seen on the diabetic boards in the past.

Also, take a look at Apple Cider Vinegar. There were some studies that it reduces carb absorbtion prior to a meal.

http://www.apple-cider-vinegar-benefits.com/vinegar-and-diabetes.html

Either way, I'd recommend going low carb for at least a month instead. Cut all grains/starches/legumes/etc. Also, do you have a blood sugar meter? I'd take that and start measuring away to see where your blood sugar is going during the day and after meals. 30 min after waking up (because blood sugar tends to spike right after waking). Before meal, after meal, hour after meal, 2 hours after meal. Expect to be a pin cushion.

Whenever you have sugar cravings, take about 1/4 to 1/8th of a teaspoon of L-Glutamine. These cravings are brain related, and L-Glutamine can suppress them very quickly. It's slightly sweet, but it isn't a carb, it's an amino acid. Between this and extra virgin coconut oil, all your cravings will go away.

You shouldn't take it if you've been diagnosed with a malignancy and are trying to starve out cancer cells, as some types of cancer can live off it the same way they do off glucose.

I've not used R-Lipoic-Acid for sugar cravings, I use the stuff for its antioxidant and chelating abilities, but googling points to several articles that say it can be used that way. You can get the same effects out of Alpha-Lipoic-Acid, but half of it goes to waste. So if you can find a source of ALA that's more than 2x cheaper than RLA, by all means.

It's important to use the blood glucose meter as this will help you find out exactly what the cravings are.

I get sugar cravings caused by insulin resistance: I can see this because the meter shows my actual blood glucose levels to be normal or above normal, even when I am experiencing cravings.

Alpha-lipoic acid works for me because it reduces my insulin resistance and in turn greatly reduces the cravings. Carb restriction is essential but in my case it was not enough on its own: I would not be without the alpha-lipoic acid. I use the Jarrow time-release formula.

I also take a Chromium GTF supplement and I am sure this is also helping with the glucose tolerance.

I'm sure you know this already, but raised blood sugars can be very dangerous and can give rise to complications long before any diagnosis of diabetes (even if you are skinny). If you have any concerns at all about the results you are getting from the blood glucose meter testing, it's important to see a doctor. Hopefully diet and lifestyle will enable you to manage the condition successfully, but some people do need medication at first until the diet etc. take effect.

Best of luck!