normally I take up to 5 g in the morning. I have started to take a 500ml bottle of water with me with 3 or 4 grams of vit C in it during the day (sometimes I forget). I also take 3-5g of vit c in the evening around 6 or 7 pm. It sounds like a lot but in total It averages out to 10-12 grams a day. I have yet to do a bowel tolerence test to find out how much C I should take a day.

Please let me know if it works for you. I am interested in knowing if I really is the vit C.

There have been studies on the effects of Vit C on Diabetes..

Here is an excerpt from http://www.umm.edu/altmed/ConsSupplements/VitaminC

This site is Good because it is objective towards vit C and if you check it out it has other important info on Vit C, I am especially interested in the effects of Vit C for lowering Cholesterol, I also found this article interesting for its effects on weight loss...

Diabetes
Vitamin C may be helpful for people with diabetes in a number of ways. First, some studies suggest that people with diabetes have high levels of free radicals (the damaging metabolic by-products, mentioned earlier, associated with many chronic illnesses) and low levels of antioxidants, including vitamin C. This imbalance may contribute to the fact that those with diabetes are at greater risk for developing conditions such as high cholesterol and atherosclerosis.

Secondly, insulin (which is low in type 1 diabetics and does not function properly in type 2 diabetics) helps cells in the body take up the vitamin C that they need to function properly. At the same time, lots of circulating blood Sugar (glucose), as is often the present in diabetics, prevents the cells from getting the vitamin C that they need, even if eating lots of fruits of vegetables. For this reason, taking extra vitamin C in the form of supplements may be helpful in those with diabetes.