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Journal of Psychiatry & Neuroscience: JPN logoLink to Journal of Psychiatry & Neuroscience: JPN
. 2000 Jan;25(1):48–52.

Use of slow-release melatonin in treatment-resistant depression.

E J Dalton 1, D Rotondi 1, R D Levitan 1, S H Kennedy 1, G M Brown 1
PMCID: PMC1407707  PMID: 10721684

Abstract

OBJECTIVE: To examine antidepressant augmentation with and hypnotic effects of slow-release melatonin (SR-melatonin) in patients with treatment-resistant depression. DESIGN: Open-label trial. SETTING: Tertiary care outpatient depression clinic. PATIENTS: Nine outpatients who had failed to respond to 2 or more 8-week trials of antidepressant medication. INTERVENTIONS: Patients received SR-melatonin 5 mg per day for the first 2 weeks and 10 mg per day for the final 2 weeks, in addition to their antidepressant medication. OUTCOME MEASURES: Structured Clinical Interview for DSM-IV, Axis 1 Disorders, Hamilton Rating Scale for Depression (HRSD), Beck Depression Inventory, Response Style Questionnaire, sleep and fatigue measures. RESULTS: One patient was excluded after 1 week because of the development of a mixed affective state. In the remaining 8 patients there was a 20% mean decrease in HRSD scores after 4 weeks of treatment, with no individual achieving an improvement of 50% or more. There was a 36% decrease on the 3-item HRSD related to insomnia, with 4 of 8 patients showing at least a 50% improvement on this measure. The greatest decrease in insomnia occurred during the last 2 weeks of the study, following the increase in dosage to 10 mg per day of SR-melatonin. Patients also reported significantly lower levels of fatigue post-treatment. CONCLUSIONS: SR-melatonin may be a useful adjunct for sleep, but does not substantially augment existing antidepressant therapies in some patients with treatment-resistant depression.

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Selected References

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