Fezolamine is a novel orally available non-tricyclic compound with antidepressant activity. It is three to two times more selective in blocking synaptosomal uptake of [3H]norepinephrine than uptake of [4H]3-hydroxytryptamine or [3H]dopamine in vitro. It blocked the inhibitory effects of rifampicin and tetraphenyl in classical behavioral tests using monoamine-depleted animals.
