systematic_review
    2026
    High Quality

    Pharmacological treatments of REM sleep behaviour disorder in synucleinopathies: a systematic review of effectiveness and safety

    Sleep Medicine review authors

    Published in Sleep Medicine

    Methodology

    Systematic review of trials and observational studies of pharmacological treatments for REM sleep behaviour disorder in synucleinopathies, assessing reduction in dream-enactment behaviour and adverse events.

    Key Findings

    Across included studies, clonazepam and melatonin were the most used agents for REM sleep behaviour disorder, with melatonin favoured for tolerability in older patients, but effect estimates were inconsistent and drawn mostly from small or uncontrolled studies.

    Conclusions

    Clonazepam and melatonin remain the principal treatments in practice, but evidence was limited and inconsistent.

    Limitations

    Few randomized controlled trials, small samples, heterogeneous outcome measures often based on subjective report rather than polysomnography, and no quantitative pooling.

    Supplements Studied

    Melatonin
    Compound

    Clonazepam and melatonin remain the principal treatments in practice, but evidence was limited and inconsistent.

    Outcomes Measured

    Across included studies, clonazepam and melatonin were the most used agents for REM sleep behaviour disorder, with melatonin favoured for tolerability in older patients, but effect estimates were inconsistent and drawn mostly from small or uncontrolled studies.

    Related Health Concerns

    Study Details

    Year:2026
    Quality Score:7/10

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