A new antidepressant Fluoxetine, a serotonin re-uptake inhibitor, was tried on 26 resistant depressed patients. There were four drop out due to severe side effects. Improvement was noticeable soon after the first week and was maximum within 3 weeks of medication in 14 (63.6%) patients while in 8 (36.4%) patients it was as late as 6-12 weeks. The decline in improvement after three weeks in 7(31....