Extracts of Ginkgo biloba have been broadly prescribed for the treatment of cognitive dysfunction ranging in
severity from mild to severe memory loss. Piracetam is a nootropic remedy correlated to inhibitory γ-aminobutyric acid
(GABA) neurotransmitter. It improves cognitive function without sedation.
Objective: The aim in the attending study is to evaluate the outcome of Ginkgo biloba and or piracetam on cognitive,
psychomotor performances and working memory functions in normal healthy volunteers.
Methods: Thirty subjects (all are males) arbitrarily chosen from medical college students. The contributors were allowed
to perform mutually on the psychomotor performance device tester and the computerized n-back test (working memory
task) to obtain knowledge from those tests sooner before the commencing of the examination. All psychometric response
time and working memory test parameters were calculated previous to the experimental research, so the identical
volunteers considered as control and through four days of receiving the Ginkgo biloba 60mg/day (trunature GSL),
piracetam 800mg/day (nootropil) or both drugs. The enrolled participants were divided into three groups. Group (A) were
given Ginkgo biloba, group (B) were given piracetam and group (C) were given piracetam and Ginkgo biloba.
Results: Piractam significantly improves cognitive and working memory at all levels (P value is <0.05) while; it showed
insignificant effects on psychometric reaction time parameters except it ameliorates the total reaction time (TRT) (P value
is <0.05). The differential effects of Ginkgo biloba showed significant effects on psychometric reaction time and cognitive
central Integrity (P value is <0.05) and insignificant effects on working memory accuracy except at І-Back level where it
produced significant effects P<0.05. Combined effects of ginko biloba and piracetam on psychomotor performances,
cognitive function and working memory produced significant effects (P value is <0.05).
Conclusion: Combined effects of piracetam and Ginkgo biloba produced more significant effects on psychomotor
performances and working memory functions in healthy young subjects than either Ginkgo biloba or piracetam alone in
healthy young subjects.