Ginkgo for Memory Enhancement
Many over the counter products containing Ginkgo are marketed as having the ability to improve one's memory, attention span and related functions in as little as one month's time. The claims, however, are not supported by well-controlled clinical studies.
A six week randomized controlled trial of men and women studied for six weeks indicated that Ginkgo did not facilitate higher performance on standard neuropsychological tests of learning, memory, attention and concentration.
The study indicated that when taken following the manufacturer's instructions, Ginkgo provided no measurable benefit in memory or related cognitive function in adults.