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Agomelatine, a melatonin agonist with antidepressant properties
Steven L Dubovsky1, Calvert Warren
1University at Buffalo, Department of Psychiatry, 462 Grider St, Buffalo NY 14215, USA. dubovsky@buffalo.edu
Expert Opinion on Investigational Drugs
|September 18, 2009
Summary
Agomelatine, a melatonin-receptor agonist and serotonin antagonist, shows antidepressant effects without daytime sedation or sexual side effects. Further research is needed for mood and circadian rhythm disorders.
Area of Science:
- Pharmacology
- Neuroscience
- Psychiatry
Background:
- Agomelatine is structurally similar to melatonin.
- It acts as a potent agonist of melatonin MT1 and MT2 receptors.
- It also functions as a serotonin 5-HT(2C) receptor antagonist.
Purpose of the Study:
- To evaluate the antidepressant efficacy and tolerability of agomelatine.
- To investigate agomelatine's effects on sleep and potential side effects.
Main Methods:
- Three placebo-controlled trials were conducted, including a dose-finding study and two pivotal trials.
- Doses of 25-50 mg/day were investigated.
Main Results:
- Agomelatine demonstrated antidepressant properties at tested doses.
- The drug appears to improve sleep without causing daytime sedation.
- It was well-tolerated, with no reported sexual or cardiac adverse effects, weight gain, or discontinuation syndromes.
Conclusions:
- Agomelatine shows promise as an antidepressant with a favorable safety profile.
- Additional research is required to define its role in treating mood and circadian rhythm disorders.
- Potential neuroprotective and anxiolytic effects warrant further investigation.
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