In article <3c5de6$cfj at calvin.st-and.ac.uk>, thm1 at st-andrews.ac.uk (Tomas Henrique Maul) wrote: > Firstly, I would like to know if endogenous benzodiazepinelike > molecules of the brain, have already been isolated. Benzodiazepines work by potentiating GABAergic synaptic transmission, so I suppose the "endogenous benzodiazepine" would be GABA.