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Does L-theanine improve sleep?
In this meta-analysis of 18 randomized controlled trials in 897 participants (ages 10–54; varying health status), interventions that contained L-theanine improved some subjective sleep-related measures.
Melatonin for insomnia + obstructive sleep apnea
Does the composition of your evening meal affect sleep quality?
Does curcumin improve sleep quality in women with premenstrual syndrome?
Valerian extract improves subjective and objective sleep outcomes
Examine Database References
- Spirulina - Sajjad Moradi, Mehdi Zobeiri, Awat Feizi, Cain C T Clark, Mohammad Hassan EntezariThe effects of spirulina (Arthrospira platensis) supplementation on anthropometric indices, blood pressure, sleep quality, mental health, fatigue status and quality of life in patients with ulcerative colitis: A randomised, double-blinded, placebo-controlled trialInt J Clin Pract.(2021 Jun 9)
- Theanine - Bulman A, D'Cunha NM, Marx W, Turner M, McKune A, Naumovski NThe effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis.Sleep Med Rev.(2025 Feb 25)