Rapid antidepressant effect of addition of lithium to tranylcypromine.

A chronically depressed patient who had not responded to treatment with several tricyclic antidepressants and monoamine oxidase inhibitors alone, responded within hours following the addition of lithium to ongoing tranylcypromine treatment in a double-blind medication trial. The findings are discussed in the context of reports of lithium augmentation of other antidepressants.