L-theanine improves sleep efficiency in individuals with ADHD
The systematic review found that L-theanine supplementation improved sleep efficiency but did not affect other sleep parameters in individuals with ADHD. This suggests a specific benefit for sleep quality in this population, though overall effects on ADHD symptoms were limited.
This article is automatically generated from the structured evidence profile behind the claim above. Scores reflect the quality and quantity of available research, not clinical advice.
L-theanine improves sleep efficiency in individuals with ADHD The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 32/100 (low).
The Claim
L-theanine improves sleep efficiency in individuals with ADHD
This conclusion is most relevant to: Individuals with ADHD (from included RCTs, open-label, and cross-sectional studies).
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Efficiency of Different Supplements in Alleviating Symptoms of ADHD with or Without the Use of Stimulants: A Systematic Review. (Nutrients, 2025) —
How It Works
The proposed biological pathway:
- ▸L-theanine increases alpha brain wave activity
- ▸Promotes relaxation without sedation
- ▸May modulate neurotransmitter levels (e.g., GABA, dopamine)
- ▸Result: Improved sleep efficiency
Who Might Benefit
Evidence fit by population:
- ▸Individuals with ADHD (from included RCTs, open-label, and cross-sectional studies)
Recommended Dose
N/A
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Limited number of studies specifically on L-theanine and sleep in ADHD
- ▸Abstract does not report specific effect sizes or confidence intervals
- ▸Potential heterogeneity in study designs and dosages across included trials
Frequently Asked Questions
Does L-theanine improve overall ADHD symptoms?▼
The review indicates L-theanine primarily improved sleep efficiency, not other sleep parameters or core ADHD symptoms like inattention or hyperactivity.
What is the recommended dose of L-theanine for sleep in ADHD?▼
The abstract does not specify a recommended dose; further studies are needed to ascertain effective dosages.
Is L-theanine safe for use in children with ADHD?▼
The review mentions safety under clinical guidance, but specific safety data for children is not detailed in the abstract.
How does L-theanine compare to stimulant medications for ADHD?▼
The review states that supplements like L-theanine have limited effects and cannot replace the well-documented efficacy of stimulants for ADHD treatment.
References
- 1.Al Shahab S, Al Balushi R, Qambar A, Abdulla R, Qader M, Abdulla S, Jahrami H. “Efficiency of Different Supplements in Alleviating Symptoms of ADHD with or Without the Use of Stimulants: A Systematic Review..” Nutrients, 2025. PMID: 40362791 DOI: 10.3390/nu17091482