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L-THEANINE · CALM FOCUS

Calm without

the drowsy.

L-Theanine is the amino acid that raises alpha-wave activity — the brain state of relaxed alertness. A clean, single-ingredient capsule for focus under pressure and smoother evenings.

Purchases are completed at Neurobiologix, the seller. Gene Direct Nutrition may earn a commission.

PROFESSIONAL GRADE · 60 CAPSULES · L-THEANINE · SUNTHEANINE

L-Theanine bottle
ALPHA WAVES
200 mg per capsule

The green-tea molecule.

L-Theanine is the amino acid that gives green tea its smooth, non-jittery effect. At supplemental doses it shifts EEG activity toward alpha — the pattern of relaxed focus.

NEUROTRANSMITTERS
3 systems modulated

GABA, serotonin, dopamine.

L-Theanine gently modulates GABA, serotonin, and dopamine signaling at once — a balanced nudge rather than a single-target sedative. That's why it calms without flattening.

DAILY DOSE
1 capsule, 1-2x daily

Stack with caffeine or solo.

Pair with morning coffee to take the edge off caffeine, or use solo before a high-pressure task or bedtime wind-down. No sedation, no habituation.

MAY BENEFIT

Relaxed alertness,
on demand.

01
Stress response
L-Theanine blunts the cortisol and blood-pressure spikes that arrive with acute stress.
02
Focused calm
Alpha-wave activity rises within 40 minutes — the EEG signature of attentive relaxation.
03
Sleep quality
Evening dosing supports sleep onset without next-day grogginess or dependency risk.
04
Caffeine smoothing
Stacked with caffeine, theanine preserves focus and removes the jittery overshoot.
05
Mood stability
Gentle modulation of serotonin and dopamine supports a steadier emotional baseline.
06
Mental performance
Studies show improved attention and reaction time during cognitively demanding tasks.

Formula

One amino acid. Clean, patented Suntheanine.

KEY INGREDIENTS

L-Theanine

OTHER INGREDIENTS

Microcrystalline Cellulose, Hydroxypropyl Methylcellulose, Water, Ascorbyl Palmitate, Silicon Dioxide

DIRECTIONS

Adults: Take one capsule one-to-two times daily or as directed by a healthcare professional.

MAY BENEFIT:
Mood & Relaxation
Memory & Cognition
Sleep
Stress

Questions

Frequently asked.

Will L-Theanine make me sleepy?
Not typically. L-Theanine produces a state of relaxed alertness rather than sedation — most users report feeling calmer and more focused, not drowsy. That's why it's often used for daytime focus and test-taking as well as evening wind-down.
Can I stack it with coffee?
Yes, and many people do. The classic pairing is 100-200 mg of L-Theanine with a cup of coffee — it preserves caffeine's cognitive benefits while smoothing out the jitters and the crash.
How is this different from GABA supplements?
Oral GABA struggles to cross the blood-brain barrier. L-Theanine crosses easily and gently boosts GABA signaling alongside serotonin and dopamine — a broader, more consistent calming effect.
When should I take it?
Flexible — morning with coffee, midday before a meeting, or 30-60 minutes before bed. One to two capsules per day as needed, or as directed by your practitioner.
Is it safe long-term?
L-Theanine has a strong safety profile. It's non-habit-forming, doesn't produce tolerance at typical doses, and has been used in beverages for decades. Consult your practitioner if you are pregnant, lactating, or taking medications.

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