Equipment Reference

Double Wood Supplements

Double Wood L-Theanine

200mg capsules for Huberman sleep stack and caffeine pairing

4.5

(4,200 community reviews)

Double Wood L-Theanine provides 200mg per capsule, the standard nootropic and sleep stack dose. Used in Huberman's pre-bed protocol (100–200mg with apigenin and magnesium) and the classic 2:1 theanine+caffeine focus stack. Third-party tested, excellent value.

Used by

Andrew Huberman listenersNootropics beginnersCaffeine-sensitive coffee drinkers

Typical price: $15 – $22 USD / 120 capsules

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How It Works

L-theanine crosses the blood-brain barrier and modulates GABA, dopamine, and serotonin pathways. Increases alpha wave activity (8–13 Hz) associated with relaxed alertness. At bedtime doses, supports GABAergic sleep onset without next-day grogginess.

Alpha Wave Promotion

200mg increases alpha brain waves within 30–45 minutes for calm alertness without sedation.

Sleep Stack Component

100–200mg before bed as part of Huberman's apigenin + magnesium + theanine cocktail.

Caffeine Smoothing

Pair 200mg theanine with 100mg caffeine to eliminate jitters while preserving focus.

What You'll Experience

Acute

30–60 minutes

Gentle calm, reduced mental chatter. Smooth focus when paired with caffeine.

Sleep Stack

Nightly

Easier sleep onset when combined with apigenin and magnesium.

Daily Use

Ongoing

No tolerance buildup. Safe for long-term daily use.

Benefits

Calm Focus

Moderate Evidence

200mg promotes alpha waves for relaxed alertness.

Sleep Support

Moderate Evidence

Key component of Huberman's pre-bed supplement stack.

Caffeine Synergy

Moderate Evidence

Eliminates coffee jitters at 2:1 theanine:caffeine ratio.

Risks & Considerations

Blood Pressure

low risk

May slightly lower BP. Monitor if on antihypertensive medication.

Community Reviews

Synthesized consensus from Reddit, forums, and expert sources.

Reddit r/Nootropics

Mostly Positive

Double Wood is the value pick for L-theanine. '200mg theanine + coffee is the first stack everyone should try.'

·Best value for 200mg dose
·Essential Huberman sleep stack component
·Pair with caffeine for smooth focus

View source

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Last updated: 2026-07-11 · Informational only. Not medical advice.