L-Theanine
L-theanine is an amino acid found in tea that promotes relaxation without sedation, increasing alpha brain waves. It is most famous for taking the edge off caffeine, producing smooth, focused energy.
Benefits
Promotes calm focus
ModerateIncreases alpha brain-wave activity associated with relaxed alertness.
Reduces stress reactivity
PreliminaryMay lower physiological markers of stress.
Pros & cons
Pros
- Pairs perfectly with caffeine
- Non-sedating relaxation
- Excellent safety
Cons
- Effects are subtle for some
- Best benefits come when stacked
Side effects
Very well tolerated
Side effects are rare even at higher doses.
How to take it
Typical dose
100–200 mg per dose
Timing
With caffeine for focus, or alone in the evening for calm
Common forms
Tip: A common ratio is 2:1 theanine to caffeine (e.g., 200 mg : 100 mg).
What the research says
L-theanine, caffeine, and attention
ModerateThe combination improves attention and reduces task-switching errors more than caffeine alone.
L-theanine and stress
PreliminarySmall studies suggest reduced stress and improved relaxation markers.
How it connects
Relationships between L-Theanine and other supplements in the matrix.
Smooths caffeine's jitters and anxiety while keeping its alertness benefits — the signature pairing.
Compare the pairingTwo calming agents often combined for evening relaxation and sleep.
Compare the pairing