Combination of ginseng and ginkgo to improve cognitive skills

Abstract

A dietary supplement consisting essentially of a combination of Ginseng and Ginkgo to improve the speed of memory and memory quality in normal, healthy subjects and to prevent deterioration of the speed of memory in people with decreased cognitive functions, and to counteract cognitive fatigue.

What is claimed is:  
     
         1 . A method to improve the speed of memory and memory quality in a normal, healthy person by co-administration of or a combination-administration of: 
 (i) the plant  Panax ginseng , extracts thereof and/or the principal active substances thereof; and    (ii) the plant  Ginkgo biloba , extracts thereof and/or the principal active substances thereof.    
     
     
         2 . A method to prevent deterioration of the speed of memory in people with decreased cognitive functions by co-administration of or a combination-administration of: 
 (i) the plant  Panax ginseng , extracts thereof and/or the principal active substances thereof; and    (ii) the plant  Ginkgo biloba , extracts thereof and/or the principal active substances thereof.    
     
     
         3 . A method to counteract cognitive fatigue by co-administration of or a combination-administration of: 
 (i) the plant  Panax ginseng , extracts thereof and/or the principal active substances thereof; and    (ii) the plant  Ginkgo biloba , extracts thereof and/or the principal active substances thereof.    
     
     
         4 . A method for the enhancement of mental effort and/or cognitive performance comprising co-administration of synergistically enhancing amounts of: 
 (i) the plant  Panax ginseng , extracts thereof and/or the principal active substances thereof; and    (ii) the plant  Ginkgo biloba , extracts thereof and/or the principal active substances thereof;    to a person in acute need of such treatment.    
     
     
         5 . A method according to  claim 4  wherein 200 to 1000 mg of a composition comprising 
 (i) about 100 parts per weight of an extract of the plant  Panax ginseng ; and  
 (ii) about 60 parts per weight of an extract of the plant  Ginkgo biloba , are co-administered 0.5 to 6.0 hours before said person is in need of such treatment.  
 
     
     
         6 . A method according to  claim 1  wherein the components (i) and (ii) are administered orally.  
     
     
         7 . A method according to  claim 1  wherein the  Panax ginseng  extract consists of at least 3% ginsenosides and the  Ginkgo biloba  extract consists of at least 20% ginkgo flavone glycosides and 2 to 10% terpene lactones.  
     
     
         8 . A method according to  claim 4  wherein the components (i) and (ii) administered orally.  
     
     
         9 . A method according to  claim 4  wherein the  Panax ginseng  extract consists of at least 3% ginsenosides and the  Ginkgo biloba  extract consists of at least 20% ginkgo flavone glycosides and 2 to 10% terpene lactones.