Although the following info came in a commercial publication selling supplements, it may have real substance to it (tho I have not checked the references). The supplements mentioned have been addressed on this site before. And tho the article concerns "diabesity" (and therefore, insulin), this forum seems the most appropriate.
Nutrition Science Review
Chromium improves glucose tolerance by taking 200 to 1,000 mcg of this essential trace mineral every day.
Chromium, Glucose Intolerance and Diabetes by Richard A. Anderson
The Effect of Chromium Picolinate on Serum Cholesterol and Apolipoprotein Fractions in Human Subjects by Raymond I. Press et al
Alpha Lipoic Acid
Improve and protect with Alpha Lipoic Acid by taking 600 to 1,200 mg a day of an alpha lipoic acid supplement to improve insulin sensitivity and help protect against diabetic complications such as nerve damage.
Diabetes Care 1999; 22:280-7 and 1296-1301
The importance of CoQ10 supplementation for people with diabetes remains an unresolved issue, though some doctors recommend.
In a double blind study of people with diabetic neuropathy, supplementing with acetyl L-carnitine was significantly more effective than a placebo in improving subjective symptoms of neuropathy and objective measure of nerve function. People who received 1,000mg of acetyl L-carnitine three times per day tended to fare better than those who received 500mg three times per day.
Diabetes Care 2005; 28:89-94
The results of a study demonstrate that intake of 1, 3, or 6 grams of cinnamon per day reduces serum glucose; triglyceride LDL cholesterol and total cholesterol in people with type 2 diabetes.
Diabetes Care 2003; 26:3215-3218
I only post this for discussion and to share some of my recent reading. I do not necessarily advocate the practice of using these supplements. I admit that much of it, if accurate, does appeal to me, especially since I am the resident insulin proponent and think the tingling in my feet is the same as the type 2 diabetic neuropathy even tho I don't have type 2. In fact, I think many type 2 diabetes symptoms are similar, if not the same, as MS symptoms. Comments welcomed.