Trazodone by intravenous infusion in depressions secondary to organic disease

16 patients with organic depression were treated with low doses of trazodone (100 mg/day) by i.v. infusion. This drug was shown to have a marked antidepressant and anxiolytic action and did not produce any significant side-effects. The authors suggest that on the basis of the diminished 24-hour urinary excretion of 5-HIAA, trazodone seems to have an antiserotonin action at low doses.