Ginkgo biloba leave extract has been reported to have effects on learning
and memory processes as well as an anti-aging effect in humans. Daily oral dose
of 240 mg EGb 761 was reported to be effective on presenile and senile primary
degenerative dementia of the Alzheimer type and multi-infarct dementia according
to DSM-III-R (20). It was reported that Ginkgo biloba leave extract can
reduce corticosteroid production, improve cerebral blood flow, increase glucose
uptake and utilization, ATP production, mitochondrial metabolism, and intraand
extra-cellular ionic gradients (21).