Interesting article in 'Pokerplayer' a couple of months back on stimulants and nootropics (Redbull, Ephedrine, Ginseng, that kind of thing). Was surprised to learn that a lot of american players are turning to Piracetam to maintain focus and alertness. Do you touch any of this stuff? I find a couple of cans of Red Bull make a big difference at final tables.
From memory their list was something like:
Piracetam 5/5
Biotest Spike 5/5
Redbull 2/5 (they criticized the 'crash' after the initial boost)
Ginseng 2/5
Ephedrine 0/5 (too many 'jitters')
Beer 0/5 (wtf?)
etc.
I know someone who swears blind by 3 vodkas and coke, each to their own I suppose...
The whole article can be found here:
http://www.pokerplayermagazine.co.uk/pokerlife/pokerfeatures/1529/performance_aids_and_poker.html