| Research Findings Alzheimer's Disease (AD) Amyloid beta-peptide has been found to have a role in the free-radical oxidative-stress model of neurotoxicity in Alzheimer's disease. Hydrogen peroxide level was elevated with AD-associated transgenic cells expressing the amyloid beta-peptide. Treatment of these cells with Ginkgo biloba extract significantly attenuated the basal as well as the hydrogen peroxide-realted reactive oxygen species levels. [Elevation of oxidative free radicals in Alzheimer's disease models can be attenuated by Ginkgo biloba extract EGb 761. Smith et al, The University of Southern Mississippi, USA. J Alzheimers Dis. 203 Aug;5(4):287-300]. Cognition/thinking-enhancing (nootropic) Wesnes et al evaluated the effect of a Ginkgo/ginseng combination on cognitive function of 64 healthy subjects (aged 40-65) in a 90-day, double blind, placebo-controlled, paralel-group study using. They assessed the subjects' performance on cycle ergometry and various questionnaires before and after dosing. They found that a 80-mg dose produced a significant benefit on the ergometry assessment of heart rate at maximum load. The cognitive, subjective, and physical effects of a ginkgo biloba/panax ginseng combination in health volunteers with neurasthenic complaints. Wesnes et al, Congnitive Drug Research Ltd, UK. Psychopharmacol Bull. 1997;33(4):677-83. Memory Effects Petkov et al studied the effects of the ginseng, ginkgo biloba extracts on young and old rats using some conditioned-reflex methods. The extracts were administered orally for 7 days before the study. They found that the two extracts and their combination improved the retention of learned behavior. Their combo is particularly promising in geriatric practice. Memory effects of standardized extracts of panax ginseng, ginkgo biloka, and their combination gincosan. Petkov et al. Bulgarian Academy of Sciences, Sofia. Planta Med. 1993 Apr;59(2):106-14. Blood Pressure Lowering Effect A preparation containing 60 mg ginkgo biloba and 100 mg ginseng was administrated to 10 voluntary subjects with a mean age of 26. The researchers found their systolic blood pressure decreased significantly at a double dose and single dose. While, diastolic blood pressure decreased only at the double dose. Hemorrheological and circulatory effects of gincosan (a combination of ginseng and ginkgo biloba). Kiesewetter et al. University of the Saarland, Germany. Int J Clin Pharmacol Ther Toxicol. 1992 Mar;30(3):97-102. THE ARTICLE ABOVE IS FOR YOUR REFERENCE ONLY. IF YOU HAVE ANY QUESTION, PLEASE, CONSULT WITH YOUR DOCTOR. PLEASE ALSO NOTE THAT THE EFFECT FROM PRODUCT TO PRODUCT MAY BE DIFFERENT. ZHION HAS NO IDEA ABOUT THEIR QUALITY. HOME |