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Practitioner grade
Practitioner only
L-theanine 200mg
Green tea amino acid for focused calm without drowsiness
A pure 200mg L-theanine capsule for promoting relaxed mental focus, reducing stress-related anxiety and supporting sleep quality, without causing drowsiness.
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Practitioner consult session
A 15-minute consultation. An email link will be included in your order confirmation to make the booking.
Optional 1:1 with our clinical team · $49
TGA-listed AUST L
Practitioner-grade formula
Clinician-reviewed before dispatch
Ships in 2 business days
What's in it
Each ingredient is in its most bioavailable form, at a clinically meaningful dose. No fillers, no token amounts, no marketing-led blends.
Free amino acid — from tea or fermentation
L-Theanine
GABA-modulating and glutamate-antagonising amino acid that promotes alpha-wave brain activity. Has a 45–60 minute onset. Does not cause sedation at standard doses.
200mg
Always read the label and follow directions for use. Vitamins and minerals can only be of assistance if dietary intake is inadequate. If symptoms persist, consult a healthcare professional.
How to take it
Simple to take, with a few timing notes that make a real difference to absorption.
1 capsule as needed for acute stress, or daily for ongoing support. May be taken with caffeine to reduce jitteriness while maintaining alertness.
Dietary supplements should not replace a balanced diet. May potentiate antihypertensive medications, consult your practitioner if taking blood pressure medication.
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Part of the Energy & Fatigue hub. Explore all protocols, supplements and investigations.
Back to Energy & Fatigue →Frequently asked.
Common questions about how OptiLabs works: testing, supplements, clinician review, returns and timing.
Are the supplements safe?
All carry an AUST L designation from the TGA. Every order is reviewed by a clinician before dispatch.
Do I need a referral?
No. All tests are available to order directly. Our lab partner is NATA and RCPA accredited, operating as a direct-access pathology service.
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A proper investigation into what's driving your symptoms, with a protocol built around your results, not a generic recommendation.