Sleep Med Rev June 2025 PMID 40056718

The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis.

Amanda Bulman, Nathan M D'Cunha, Wolfgang Marx, Murray Turner, Andrew McKune, Nenad Naumovski

Download social card

Mentions

44
Peak: 20 in May 2025
across 5 sources since Feb 2025

Extended reach

68,223
potential audience

Total likes

211

Video views

678

Mentions per month

Feb 2025 – Sep 2025

Where it's discussed

  • X / Twitter30 posts
  • News8 articles
  • Blogs3 articles
  • YouTube2 videos
  • Bluesky1 posts

AI synopsis

What people are saying

The discussions highlight the promising effects of L-theanine on sleep quality noted in the review, such as faster sleep onset and reduced daytime dysfunction, supported by phrases like 'shows promise' and 'significantly improves.' The tone is generally optimistic, yet cautious, reflecting an awareness of the preliminary nature of some findings and the preliminary call for more research.

AgreementModerate agreement

Most posts acknowledge the positive findings of the review, emphasizing improvements in sleep quality and daytime functioning, reflecting general approval.

InterestHigh interest

The discussions show high curiosity about L-theanine's potential as a natural sleep aid, with phrases like 'shows promise' and 'significantly improves' indicating engagement.

EngagementModerate engagement

While some posts cite specific outcomes such as 'sleep onset latency' and 'subjective sleep quality,' they primarily express support rather than deep analysis.

ImpactModerate impact

The posts suggest a moderate perceived impact, recognizing potential benefits but also noting the need for further research, which tempers overly strong claims.

Abstract in brief

  • This systematic review and meta-analysis examined how L-theanine, an amino acid found in tea, affects sleep, finding it significantly improves sleep onset, daytime function, and overall sleep quality.
  • The analysis included 19 studies with 897 participants, but most used L-theanine in combination with other substances, indicating a need for more research on pure L-theanine.
  • Future research should focus on determining the optimal dose and duration of L-theanine to effectively improve sleep in both healthy individuals and those with sleep disorders.

Top posts

Most liked on X and Bluesky
William A. Wallace, Ph.D.
@drwilliamwallac · X

L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing daytime dysfunction. A recent systematic review and meta-analysis published in Sleep Medicine Reviews (doi: 10.1016/j.smrv.2025.102076) looked at the effects of https://t.co/yynVUjvK2r

May 1, 2025 · 162 likes · 24 shares · 11,598 followers View post →
William A. Wallace, Ph.D.
@drwilliamwallac · X

L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing daytime dysfunction. A recent systematic review and meta-analysis published in Sleep Medicine Reviews (doi: 10.1016/j.smrv.2025.102076) looked at the effects of https://t.co/AUk2ag6leA

Apr 1, 2025 · 20 likes · 3 shares · 11,598 followers View post →
Nick Krontiris
@nick_krontiris · X

The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis (open access) https://t.co/xWrLHLxiXT

Mar 12, 2025 · 3 likes · 1 share · 19,104 followers View post →
Tom Coughlin
@tecoughlin · X

Reference: https://t.co/KomCYCw1en

Mar 16, 2025 · 3 likes · 4,220 followers View post →
htw
@heniek-htw.bsky.social · Bluesky

The effects of #L-theanine consumption on #sleep outcomes: a systematic review and meta-analysis L-theanine was shown to significantly improve subjective sleep onset latency, subjective daytime dysfunction & overall subjective sleep quality score. www.sciencedirect.com/science/arti...

Feb 25, 2025 · 2 likes View post →
Dr. Suzana Mantovani
@Tweet_Nutrition · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 2, 2025 · 24 shares · 4,575 followers View post →

All mentions

เนิร์ดซับพลิเมนท์
@Nerd_Supp · X

Aug 19, 2025 · 2 followers View post →
SimpleHealth.live
@SimpleHLive · X

The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis. A review of 19 studies found that L-theanine, a natural compound in tea, can help people fall asleep faster, sleep better, and feel less tired during the day. While more research is https://t.co/yD3BdhhTuK

Jun 4, 2025 · 8 followers View post →
Danilo Amorim
@danilonutripers · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 3, 2025 · 24 shares · 104 followers View post →
Daniel
@DanielD67592552 · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 3, 2025 · 24 shares · 65 followers View post →
renata_schwartz
@re_schwartz · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 2, 2025 · 24 shares · 129 followers View post →
MerciBoku
@MerciBoku8 · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 2, 2025 · 24 shares · 12 followers View post →
Risk_Contr0l
@RContr0l · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 2, 2025 · 24 shares · 568 followers View post →
Rahie T
@Rahie_T · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 2, 2025 · 24 shares · 232 followers View post →
Rahe
@flowerofmemory · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 2, 2025 · 24 shares · 1,837 followers View post →
Dr. Suzana Mantovani
@Tweet_Nutrition · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 2, 2025 · 24 shares · 4,575 followers View post →
Cristina Tomasi
@ruatom_it · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 2, 2025 · 24 shares · 431 followers View post →
Antuany
@Antuany490976 · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 2, 2025 · 24 shares · 7 followers View post →
sawan lee
@sawan_lee · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 2, 2025 · 24 shares · 4 followers View post →
octavio
@dontavo66 · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 1, 2025 · 24 shares · 331 followers View post →
CopperKettle
@Artyom_Yekat · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 1, 2025 · 24 shares · 384 followers View post →
JR
@JR78202114 · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 1, 2025 · 24 shares · 535 followers View post →
z Boží vůle frajer
@JiriBogdan · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 1, 2025 · 24 shares · 1,614 followers View post →
Argón
@metilargon · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 1, 2025 · 24 shares · 354 followers View post →
Johnatan Braz
@BrazJohnatan · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 1, 2025 · 24 shares · 29 followers View post →
EJ
@EJuliachs · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 1, 2025 · 24 shares · 374 followers View post →
Dr R S Lamba MD Psychiatry
@rajendr15119669 · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

May 1, 2025 · 24 shares · 1,122 followers View post →
William A. Wallace, Ph.D.
@drwilliamwallac · X

L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing daytime dysfunction. A recent systematic review and meta-analysis published in Sleep Medicine Reviews (doi: 10.1016/j.smrv.2025.102076) looked at the effects of https://t.co/yynVUjvK2r

May 1, 2025 · 162 likes · 24 shares · 11,598 followers View post →
Alper Aydın (Dietitian )
@aydinnalper · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

Apr 4, 2025 · 3 shares · 1,428 followers View post →
Jerrad ‘Coach Kona’
@JerradG · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

Apr 1, 2025 · 3 shares · 4,122 followers View post →
z Boží vůle frajer
@JiriBogdan · X

RT @drwilliamwallac: L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing dayt…

Apr 1, 2025 · 3 shares · 1,614 followers View post →
William A. Wallace, Ph.D.
@drwilliamwallac · X

L-theanine shows promise as a natural sleep aid, particularly for improving subjective sleep quality and reducing daytime dysfunction. A recent systematic review and meta-analysis published in Sleep Medicine Reviews (doi: 10.1016/j.smrv.2025.102076) looked at the effects of https://t.co/AUk2ag6leA

Apr 1, 2025 · 20 likes · 3 shares · 11,598 followers View post →
大城竜樹|理学療法士
@souphysio · X

論文リンク https://t.co/K1IMfpHS9a

Mar 27, 2025 · 24 followers View post →
Tom Coughlin
@tecoughlin · X

Reference: https://t.co/KomCYCw1en

Mar 16, 2025 · 3 likes · 4,220 followers View post →
Mind Your Science!
@MindYourSci · X

RT @nick_krontiris: The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis (open access) https://t…

Mar 13, 2025 · 1 share · 133 followers View post →
Nick Krontiris
@nick_krontiris · X

The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis (open access) https://t.co/xWrLHLxiXT

Mar 12, 2025 · 3 likes · 1 share · 19,104 followers View post →
htw
@heniek-htw.bsky.social · Bluesky

The effects of #L-theanine consumption on #sleep outcomes: a systematic review and meta-analysis L-theanine was shown to significantly improve subjective sleep onset latency, subjective daytime dysfunction & overall subjective sleep quality score. www.sciencedirect.com/science/arti...

Feb 25, 2025 · 2 likes View post →