Description
What is XYMOGEN L-Theanine?
Xymogen L-Theanine is a calming, non-drowsy amino acid supplement that features Suntheanine®, a patented, highly studied form of L-theanine naturally found in green tea leaves.
L-theanine helps promote relaxation without sedation, ease everyday nervous tension and mental fatigue, and support a calm, focused state—making it ideal for stress support, work focus, and balanced mood during the day or evening. This is the highest value 120 capsule size.
What is in XYMOGEN L-Theanine?
Each serving provides a clean, single-ingredient, practitioner-grade formula:
Active ingredient (per 2-capsule serving)
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L-Theanine – 400 mg
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As Suntheanine®, a patented, purified form of L-theanine used in human studies for relaxation and alpha brain-wave support.
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Other ingredients
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Capsule (hypromellose and water)
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Microcrystalline cellulose
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Ascorbyl palmitate
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Medium-chain triglyceride (MCT) oil
Free-from profile
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No wheat, gluten, corn, yeast, soy, dairy, animal products, fish, shellfish, peanuts, tree nuts, egg, or GMO ingredients.

Why is Xymogen L-Theanine different from other L-Theanine products?
Xymogen’s formula is designed to be more targeted, more researched, and cleaner than many generic L-theanine supplements:
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Patented Suntheanine® for consistency and purity
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Uses Suntheanine®, a branded L-theanine shown in human studies to promote alpha brain-wave activity (associated with calm, focused relaxation) and reduce nervous tension.
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Protected by multiple patents and standardized for consistent quality from batch to batch.
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Clinically relevant dosing in a flexible format
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Each 2-capsule serving delivers 400 mg L-theanine, a dose used in clinical research for stress and mood support.
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Capsule format (not a blend with stimulants) lets you easily adjust your dose based on your practitioner’s guidance and your personal response.
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Non-drowsy calm and focus
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Designed to promote relaxation without sedation or brain fog, so it can be used during the day for work, study, or daily stress—unlike many calming products that cause sleepiness.
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May also help blunt some of the unwanted effects of caffeine, making it a useful companion for coffee and tea drinkers.
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Practitioner-grade, allergen-conscious formula
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Manufactured to high quality standards and free of common allergens and GMOs, ideal for individuals who are ingredient- and sensitivity-conscious
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How should I take Xymogen L-Theanine?
Always follow the label and your healthcare practitioner’s instructions.
Suggested use (typical label directions):
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Take 1–2 capsules twice daily, or as directed by your healthcare professional.
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This delivers 200–400 mg L-theanine per dose, up to 400–800 mg per day depending on how many capsules you use.
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Practical usage tips (general guidance):
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Can be taken with or without food; many people prefer it
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in the morning or midday for calm focus, or
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later in the day or evening to unwind from stress.
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Your practitioner may adjust timing and dose for specific goals such as stress support, focus, or sleep quality.
Important considerations
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Consult your healthcare professional before use if you are pregnant, nursing, have a medical condition, or take prescription medications.
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Do not exceed the recommended dose unless directed by your practitioner.

What are XYMOGEN products?
Xymogen products are science-backed supplements designed to support your optimal health. Discover how Xymogen products can help you achieve your health goals. Read more about XYMOGEN products.

How can I get started with XYMOGEN L-Theanine?
Are you ready to start feeling better? Starting with Xymogen L-Theanine is easy. Simply schedule an appointment with Cunningham Clinic, discuss your concerns with your provider and then pick up your nutraceutical grade L-Theanine.















