http://forums.phoenixrising.me/index.php?threads/high-dose-vitamin-b1-thiamine.34387/
Thiamine is lost in cooking and is depleted by use of sugar, coffee, tannin from black teas, nicotine, and alcohol, so it is necessary to insure that intake of thiamine is an optimal level.
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Thiamin may enhance circulation, helps with blood formation and the metabolism of carbohydrates. It is also required for the health of the nervous system and is used in the biosynthesis of a number of cell constituents, including the neurotransmitter acetylcholine and gamma-aminobutyric acid (GABA). It is used in the manufacture of hydrochloric acid, and therefore plays a part in digestion.
Interesting forum! especially for the fague headed peeps in here, loads of info. (its 2:15 here cant concentrate anymore lol too much info )