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An Open-Labeled Trial of Ramelteon in Idiopathic Rapid Eye Movement Sleep Behavior Disorder
Yuichi Esaki1, Tsuyoshi Kitajima1, Shigefumi Koike2
1Department of Psychiatry, Fujita Health University School of Medicine, Aichi, Japan.
Ramelteon, a medication for REM sleep behavior disorder (RBD), showed mild benefits in a small trial. While not definitively effective, it was well-tolerated, suggesting potential for future studies in treating this sleep disorder.
Area of Science:
- Neurology
- Sleep Medicine
- Pharmacology
Background:
- Rapid eye movement (REM) sleep behavior disorder (RBD) is a parasomnia.
- Characterized by REM sleep without atonia and motor activity during dreams.
- Ramelteon, a melatonin receptor agonist, has shown efficacy in secondary RBD.
Purpose of the Study:
- To investigate the efficacy of ramelteon in treating idiopathic RBD.
- To evaluate ramelteon's effects on polysomnographic and clinical measures of RBD.
Main Methods:
- Open-labeled trial of 12 consecutive patients with idiopathic RBD.
- Treatment involved 8 mg ramelteon nightly for at least 4 weeks.
- Assessment included video-supported polysomnography and visual analog scale.
Main Results:
- Ramelteon did not significantly improve REM sleep without atonia or RBD severity scores.
- A trend toward significance was observed in visual analog scale assessments.
- Positive changes were noted in some individual cases, with good tolerability and minor side effects.
Conclusions:
- Ramelteon showed a trend toward efficacy and was well-tolerated in idiopathic RBD patients.
- Further research is warranted to confirm ramelteon's effectiveness, especially when alternatives like clonazepam are unsuitable.
- Ramelteon's favorable side effect profile makes it a potential treatment option for RBD.
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