Diabetic? Start Taking Vitamin C

Seventy type II diabetics were given 500mg of the diabetes drug metformin twice a day plus either 500mg of vitamin C  or a placebo twice a day for twelve weeks. . . .
  

Compared to the placebo, vitamin C significantly improved fasting and postmeal blood glucose levels. It also significantly decreased HbA1c, a measure of long-term blood sugar control.
   So add vitamin C to your diabetes treatment.

(Adv Pharm Sci 2011;doi:10.1155/2011/195271)