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Many people are not aware
of the ability that herbs have to alter blood glucose. For instance, Capsicum,
also known as cayenne may increase the hepatic metabolism of drugs by increasing
the activity of glucose-6-phosphate dehydrogenase and adipose lipase. (3)
Ephedra, recently banned in the U.S., can increase blood glucose, which
can cause hyperglycemia and loss of blood glucose control in those patients
with diabetes. Excessive consumption of ginger may lower blood glucose
and Guarana contains caffeine, which is a stimulant that can also increase
blood glucose. Although caffeine can increase blood glucose, epigallocatechin
gallate (a component of green tea) has an antidiabetic effect. Excessive
amounts of caffeine increased blood glucose but recent preliminary research
showed a decrease in the risk of type 2 diabetes. Table
1 lists herbs that may lower blood glucose levels. (4)
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