L-Theanine for Sleep Issues: User Reports (UK)

Why L-Theanine for Sleep Issues?

The connection

Difficulty falling asleep, staying asleep, or poor sleep quality. Insomnia affects ~30% of adults.

Also known as: Theanine, L-gamma-glutamylethylamide

Evidence analytics

L-Theanine × Sleep Issues: at a glance

Every published result for this pair, extracted and audited.

6

Indexed publications

2023-2026

Publication years

6

Unique studies

Research volume over time for L-Theanine × sleep issues. Structured outcome extraction (direction, effect size) for this pair is in progress - the full analytics will appear here once audited.

← Zoom out: all evidence for L-Theanine Zoom out: compare compounds for Sleep Issues →

Peer-reviewed research

L-Theanine × Sleep Issues: the evidence base

Hand-selected PubMed studies, linked to the originals.

6studies referenced

6journals

2023–2026publication range

Ordered by strength of evidence, then result direction.

01The effects of oral cannabidiol supplementation on blood pressure in adults: a systematic review of randomised controlled trialsRoberts A, et al. · Journal of cannabis research · 2026PMID 42321899 ↗02Dysregulation of melatonin rhythm in Parkinson's and Huntington's disease: a systematic review and meta-analysisSuram RP, et al. · Frontiers in aging neuroscience · 2025PMID 41143249 ↗03Effects of Dietary Supplementation in Patients with Restless Legs Syndrome: A Systematic ReviewGonzález-Parejo P, et al. · Nutrients · 2024PMID 39064758 ↗04The effects of L-theanine supplementation on the outcomes of patients with mental disorders: a systematic reviewMoshfeghinia R, et al. · BMC psychiatry · 2024PMID 39633316 ↗

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Compound overviewL-Theanine →All conditions, research, and outcomes for L-Theanine Condition overviewSleep Issues →All compounds explored for sleep issues ContributeShare your experience →Help others by reporting what worked and what didn't

Important: This page reflects observational, aggregate-only community reporting and independent published research. It is not medical advice, and it does not claim any compound treats, cures, or is effective for any condition. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or treatment.