Theanine
L-Theanine
CALM FOCUS WITHOUT THE DROWSINESS
L-Theanine is an amino acid found naturally in green tea that promotes relaxed alertness by boosting alpha brain waves. It supports stress resilience, mental clarity, and sleep quality — all without sedation or drowsiness.
30-day supply
Key Benefits
Promotes calm focus without drowsiness
Supports relaxation and stress resilience
May improve sleep quality
Enhances alpha brain wave activity
Supports These Goals
Linked Biomarkers
Our blood test can measure these markers to personalize your dose
Why you'll love it
Ever wonder why a cup of green tea feels so different from coffee, even though both contain caffeine? The secret is L-Theanine. This amino acid, found almost exclusively in tea leaves, crosses the blood-brain barrier and promotes alpha brain wave activity — the frequency associated with calm, focused attention. It's the state of mind you experience during meditation or creative flow.
Theanine works beautifully on its own for stress and anxiety relief, but it truly shines when paired with caffeine. Research shows the combination improves attention, reaction time, and cognitive performance more than either compound alone — while theanine takes the jittery edge off caffeine. It's focused energy without the crash.
At bedtime, theanine supports sleep quality not by sedating you but by calming the mental chatter that keeps you awake. Studies show it reduces resting heart rate, lowers stress markers, and helps people fall asleep faster by promoting relaxation. It's remarkably versatile: take it in the morning for focused calm, pair it with coffee for clean energy, or take it at night for better sleep.
Clinical Evidence
Our recommendations are grounded in published clinical research. Here are key studies supporting the benefits of Theanine.
L-theanine with caffeine boosts alertness; alone it promotes calm
Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis
2014
L-theanine at 200-400 mg/day helps reduce stress and anxiety
The effects of green tea amino acid L-theanine consumption on the ability to manage stress and anxiety levels: a systematic review
2020
Study titles shown are simplified summaries of the original research for readability. Original titles are shown in italics below each heading. All studies cited are from peer-reviewed journals indexed in PubMed. Links open in a new tab to the original source. These studies are provided for informational purposes and do not constitute medical advice.
How much do I really need?
Take one 200mg capsule daily. For calm focus, take in the morning or early afternoon (pairs excellently with coffee or tea). For sleep support, take 30-60 minutes before bed. Theanine is non-habit-forming and does not cause daytime drowsiness.
Safety & Transparency
Full transparency — here's exactly what's in every capsule, verified by our manufacturer.
Third-Party Tested
Every batch is independently tested by ISO-17025 accredited labs for purity, potency, and contaminants.
Doctor Formulated
Designed by healthcare professionals using evidence-based research and clinical expertise.
cGMP Certified
Manufactured in cGMP & UL certified, FDA-registered facilities with a flawless inspection record.
As with any natural health product, you should consult your healthcare practitioner on the use of this product. Store product in a cool and dry place. Keep out of reach of children. If you experience an adverse event or allergic reaction, discontinue use immediately and contact a healthcare professional.
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