The study assesses the quantitative percentage use of second generation antidepressants (non-tricyclics or modified tricyclics) in clinical psychiatric practice in comparison with first generation products. The study was conducted on patients presenting in the surgery and psychiatric ward of Novara and in Turin Psychiatric Clinic in an-June 1987 and covers all patients receiving antidepressant drugs. For each individual given thymoanaleptic drugs, the type used and the reasons for its selection were examined as well as the combined use of antidepressants with other psychotherapeutic drugs. The data show that second generation antidepressants have come to play a major therapeutic role, though further research is needed to define their specific use and as far as possible to eliminate their use as a "vicarious" substitute for traditional drugs.