I am getting ready to start studying again here shortly after Christmas. I have used Ginko Biloba in the past and it worked very well. I retained a lot of what i read. But I tried a different kind another time and it didn't work as well. I wish i remembered what brand the first one was.

Is focus factor any good? Please tell me of the best ones you have tried. I'm not going to buy the cheaper one if it isn't going to work as well. Money isn't a problem this time. Please help>
THANK YOU !!
Happy holidays.