Biol Psychol February 2008 PMID 18006208

The effects of L-theanine, caffeine and their combination on cognition and mood.

Crystal F Haskell, David O Kennedy, Anthea L Milne, Keith A Wesnes, Andrew B Scholey

Mentions

28
Peak: 3 in Sep 2025
across 7 sources since Apr 2008

Extended reach

27,487
potential audience

Total likes

335

Video views

5,517

Mentions per month

Apr 2008 – Sep 2025

Where it's discussed

  • News13 articles
  • X / Twitter7 posts
  • Instagram3 posts
  • YouTube2 videos
  • Bluesky1 posts
  • TikTok1 posts
  • Blogs1 articles

AI synopsis

What people are saying

The overall tone reflects moderate interest, with users like @DrDominicNg sharing his profile to promote more information, and others referencing the original publication without significant disagreement or in-depth discussion. Words like 'follow' and references to the study suggest curiosity and recognition of its importance, but the lack of detailed critique indicates a surface-level engagement. This produces an overall neutral to mildly interested evaluation with modest impact on the audience.

AgreementNeither agree nor disagree

Most discussions reference the original study without opposing views, indicating a neutral stance toward its findings.

InterestModerate interest

The posts show moderate curiosity, notably referencing the study and encouraging follow-up for more insights.

EngagementNeutral engagement

Comments mainly acknowledge the publication and share links, but lack deep analysis or critique.

ImpactModerate impact

While there is some recognition of the study’s relevance, there is little evidence of profound influence or calls to action.

Abstract in brief

  • The study examined the effects of L-theanine (250 mg), caffeine (150 mg), and their combination on cognition and mood, finding that L-theanine increased headache ratings and decreased certain cognitive performance, while caffeine improved alertness, reaction times, and reduced fatigue.
  • The combination of L-theanine and caffeine showed additional benefits, such as faster reaction times, better memory, reduced headache and tiredness, and increased alertness, indicating a potentially unique interaction between the two.
  • Overall, beverages with both L-theanine and caffeine may have different effects compared to caffeine alone, highlighting their distinct pharmacological profiles in influencing mood and cognitive functions.]

Top posts

Most liked on X and Bluesky
Dr. Dominic Ng
@DrDominicNg · X

Follow me @DrDominicNg for more actionable brain insights https://t.co/VdhUmqDeLY

Sep 21, 2025 · 17 likes · 1 share · 18,693 followers View post →
nws
@NeastWS · X

@opinonhaver https://t.co/lPkYEfM96W https://t.co/9N3vObeYcn

Sep 19, 2023 · 4 likes · 640 followers View post →
3回以内に整体を卒業させる人|小西 貴
@konishi_health · X

やっぱ、メンタルにも緑茶最強ってことで…。 https://t.co/Ax5DLybaMG

Feb 16, 2022 · 2 likes · 172 followers View post →
Hubert Deep Work
@Hub_Deep_Work · X

Haskell, C. F., Kennedy, D. O., Milne, A. L., Wesnes, K. A., & Scholey, A. B. (2008). The effects of L-theanine, caffeine and their combination on cognition and mood. Biological psychology, 77(2), 113-122.

Nov 16, 2023 · 846 followers View post →
Hubert Deep Work
@Hub_Deep_Work · X

@haspidox Haskell, Crystal F., et al. "The effects of L-theanine, caffeine and their combination on cognition and mood." Biological psychology 77.2 (2008): 113-122.

Oct 10, 2023 · 846 followers View post →
AJ
@burrito_capital · X

@SCMountainGoat https://t.co/UkS0tNqRv9

Oct 23, 2024 · 380 followers View post →

All mentions

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Nuture · May 3, 2023 3,141 views
Ferran Seco
@ferranseco · X

RT @DrDominicNg: Follow me @DrDominicNg for more actionable brain insights https://t.co/VdhUmqDeLY

Sep 24, 2025 · 1 share · 210 followers View post →
Dr. Dominic Ng
@DrDominicNg · X

Follow me @DrDominicNg for more actionable brain insights https://t.co/VdhUmqDeLY

Sep 21, 2025 · 17 likes · 1 share · 18,693 followers View post →
Dr. Dominic Ng
@dominicng.bsky.social · Bluesky

Follow me @DrDominicNg for more actionable brain insights pubmed.ncbi.nlm.nih.gov/18006208/

Sep 21, 2025 View post →
AJ
@burrito_capital · X

@SCMountainGoat https://t.co/UkS0tNqRv9

Oct 23, 2024 · 380 followers View post →
Hubert Deep Work
@Hub_Deep_Work · X

Haskell, C. F., Kennedy, D. O., Milne, A. L., Wesnes, K. A., & Scholey, A. B. (2008). The effects of L-theanine, caffeine and their combination on cognition and mood. Biological psychology, 77(2), 113-122.

Nov 16, 2023 · 846 followers View post →
Hubert Deep Work
@Hub_Deep_Work · X

@haspidox Haskell, Crystal F., et al. "The effects of L-theanine, caffeine and their combination on cognition and mood." Biological psychology 77.2 (2008): 113-122.

Oct 10, 2023 · 846 followers View post →
nws
@NeastWS · X

@opinonhaver https://t.co/lPkYEfM96W https://t.co/9N3vObeYcn

Sep 19, 2023 · 4 likes · 640 followers View post →
3回以内に整体を卒業させる人|小西 貴
@konishi_health · X

やっぱ、メンタルにも緑茶最強ってことで…。 https://t.co/Ax5DLybaMG

Feb 16, 2022 · 2 likes · 172 followers View post →
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