Comparative Studies with Milnacipran and Tricyclic Antidepressants in the Treatment of Patients with Major Depression: a Summary of Clinical Trial Results

Milnacipran is a novel antidepressant agent which selectively inhibits the reuptake of serotonin and noradrenaline. Seven randomized, double-blind trials with a comparable design have compared the efficacy and tolerability of milnacipran with that of tricyclic antidepressants (TCAs) in patients with major depression. At a dose of 50 mg twice a day, milnacipran therapy is associated with a response rate (50% reduction in Hamilton Depression Rating Scale) of 64%. The rate of response to TCAs in these studies was 67%. In contrast to the TCAs, milnacipran was very well tolerated by the patients. The only adverse event that occurred more frequently in milnacipran-treated patients than in TCA-treated patients was dysuria (2.1% of patients treated with milnacipran). Milnacipran is as effective as TCAs in the treatment of patients with major depression and is better tolerated. Milnacipran's lack of effects on cardiovascular function offers improved safety in cases of overdose.