Theanine
Theanine, also commonly referred to as L-theanine, is a naturally occurring amino acid found in tea. Supplementation with L-theanine may help reduce stress and anxiety and might improve sleep quality and some aspects of cognitive function.
Quick Answer
What it is
Theanine, also commonly referred to as L-theanine, is a naturally occurring amino acid found in tea. Supplementation with L-theanine may help reduce stress and anxiety and might improve sleep quality and some aspects of cognitive function.
Key findings
- Grade B: Anxiety Symptoms (Stress)
- Grade D: Alertness (Cognitive Improvement)
- Grade D: Aerobic Exercise Metrics (Aerobic Exercise Performance)
Safety
No specific caution or interaction language was detected in the current summary/outcome notes.
ℹ️ Quick Facts: Theanine
Quick Facts: Theanine
- Best Evidence:Grade B
- Conditions Studied:15
- Research Outcomes:155
- Grade B Findings:1
- Key Effect:Focus & Attention
Detailed Outcomes
Evidence by Condition
Best grade per condition (each condition may have multiple outcomes)
Research Citations (36)
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