Amino & PerformanceNo.053
L-Theanine
Calm focus, takes the edge off caffeine.
Typical / RDA100–200 mg
Upper limitWell tolerated
EvidenceModerate
How to take it
Timing With caffeine / AMFood OptionalForm Pure L-theanine
What to know
An amino acid from tea that promotes relaxed alertness without drowsiness. Commonly paired with caffeine to smooth out jitters. Low risk.
Interactions & cautions
- May mildly lower blood pressure — minor for most.
Do you actually need it?
A reasonable, low-risk trial for focus with coffee.
Reference values: NIH Office of Dietary Supplements, adult general population. Educational information only — not medical advice. Confirm with a healthcare professional.