[draakon]

Thanks, you have interesting points.

To others who are interested in psychoactive drugs I would like to suggest following book (you are probably already familiar with it):

A Primer of Drug Action by Robert Julien ( http://www.amazon.com/Primer-Drug-Action-Robert-Julien/dp/14... )

It contains concise and objective information about various psychoactive substances, their effects and mechanisms of action.