meta_analysis
    2022
    High Quality

    The impact of tryptophan supplementation on sleep quality: a systematic review, meta-analysis, and meta-regression

    Sutanto CN, Loh WW, Kim JE

    Published in Nutrition Reviews

    Key Findings

    Tryptophan doses above 1 g reduced wake after sleep onset, while lower doses had no significant effect on sleep parameters.

    Conclusions

    Sleep benefit appears dose dependent.

    Limitations

    Few trials, varied populations and endpoints.

    Supplements Studied

    L-Tryptophan
    Amino Acid

    Tryptophan doses above 1 g reduced wake after sleep onset, while lower doses showed no significant sleep effect.

    Related Health Concerns

    Insomnia

    Study Details

    Year:2022
    Quality Score:8/10

    Access Study

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    This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.