L-Theanine
Calm focus without drowsiness — the zen ingredient in green tea
Calm, focused state — no sedation.
An amino acid from tea leaves that crosses the blood-brain barrier and boosts alpha-wave activity — the EEG signature of relaxed alertness.
- Combines with caffeine to smooth out the jitters while preserving alertness.
- Slightly raises GABA, serotonin, and dopamine tone.
- Non-drowsy — works through calm, not sedation.
L-Theanine is a natural ingredient found in green tea. It puts your brain into 'Alpha wave' mode — that's the relaxed-but-alert state you feel during a really good conversation or a creative flow. It boosts your brain's calming chemicals without making you sleepy. When you combine it with caffeine, it's like having the energy of coffee but the calm of meditation at the same time.
How long it stays, how it leaves.
Fixed dosing — not weight-adjusted. The calculator handles reconstitution math for common vial sizes so you inject the right volume every time.
Three tiers, three goals.
Use 2x the amount of your caffeine dose
What people actually report.
- Almost no side effects — super safe
- Might feel slightly sleepy at really high doses
Before you start.
- One of the safest supplements you can take — it's just a tea ingredient
- No known bad interactions with other supplements
- Works just as well after months of use — no tolerance buildup
Combinations worth knowing.
Calm Focus Stack
The ultimate brain hack. 200mg L-Theanine + 100mg Caffeine is the most studied and proven nootropic combo in existence. Clean energy, zero jitters.