The postprandial glucose level is the amount of sugar in the blood after a meal. It tends to be high in people with type 2 diabetes, causing fatigue, irritability, dry mouth and other symptoms. Research appearing in BMC Complimentary and Alternative Medicine (2014 Jul 11; 14(1):237) looked at the effect fermented red ginseng had on patients with type 2 diabetes. The 42 subjects of the study were randomly selected to receive either fermented red glucose or placebo three times daily over a four-week period. The group receiving the fermented red glucose had significantly lower postprandial glucose. The authors stated, “Daily supplementation with FRG lowered postprandial glucose levels in subjects with impaired fasting glucose or type 2 diabetes.”