L-Theanine 200 mg (Suntheanine®)
L-Theanine (Suntheanine®) from Greatlife is a pure and well-researched amino acid that naturally occurs in green tea and plays an important role in supporting nervous system balance and mental focus. L-Theanine is known for its calming and stress-reducing properties and is used to promote mental clarity, inner calm, and restful sleep without causing drowsiness. L-Theanine (Suntheanine®) from Greatlife is a high-quality, patented supplement, free from additives, contaminants, and artificial ingredients.
- Suntheanine® is a patented and clinically studied form of L-theanine
- Well studied for relaxation and stress reduction without causing drowsiness
- May help improve sleep quality
- Free from dairy, soy, sugar, gluten, and GMOs
- Free from artificial sweeteners, colorings, preservatives, hydrogenated oils, corn syrup, and magnesium stearate
- Dark glass jar free from BPA, phthalates, and other endocrine-disrupting substances
- Manufactured under HACCP standards in the EU
- Suitable for vegans and vegetarians
- Fast delivery (2–4 days)
- Free shipping over €59
- In stock
L-Theanine 200 mg (Suntheanine®)
L-Theanine (Suntheanine®) of pharmaceutical grade from Greatlife is the finest L-theanine we have found. It is a high-quality, well-researched amino acid, originally developed in Japan and produced through a patented fermentation process. L-Theanine plays a central role in supporting nervous system balance and mental clarity. It is used to promote relaxation, focus, and stress reduction without causing drowsiness. Unlike lower-grade raw materials, L-Theanine (Suntheanine®) from Greatlife is characterized by documented purity and carefully controlled production. This supplement is pure and free from additives, toxins, and GMOs.
For best results, we recommend taking L-Theanine approximately 30–60 minutes before bedtime when the goal is to support relaxation and sleep quality. It can also be taken during the day when calm focus is needed or during periods of stress. The product can be used daily and is suitable both for occasional needs and as part of a long-term routine to support nervous system balance.
Biologically, L-Theanine works by modulating the activity of neurotransmitters such as GABA, glutamate, and dopamine. It promotes alpha brain waves, which are associated with a state of relaxed alertness. L-Theanine may also help moderate the body’s stress response and support mental resilience during periods of strain.
Why L-Theanine?
L-Theanine offers several unique properties compared to many other forms of nervous system support:
Support for relaxation and mental clarity
- L-Theanine may promote a state of calm without causing fatigue.
- It supports focus and cognitive balance during mental strain.
Support during stress and worry
- L-Theanine may help reduce perceived stress.
- It supports nervous system balance during periods of inner tension.
Support for sleep quality
- L-Theanine may contribute to improved sleep quality by promoting relaxation.
- It is often used to help unwind in the evening.
Suntheanine® – patented and clinically studied
Suntheanine® is a patented form of L-theanine with documented quality and purity. The raw material is produced through a controlled fermentation process that ensures high stability and consistent quality. Suntheanine® has been clinically studied and is used internationally in premium products for nervous system and stress balance support. We have not found a better L-theanine in the world than Suntheanine®.
L-Theanine of the highest quality
L-Theanine (Suntheanine®) from Greatlife is a pure, premium-quality amino acid, free from dairy, soy, sugar, gluten, and GMOs, and without artificial sweeteners, colorings, preservatives, hydrogenated oils, corn syrup, or magnesium stearate. The product is delivered in a dark glass jar free from BPA, phthalates, and other endocrine-disrupting substances. Manufacturing takes place in the EU under strict quality and hygiene standards, and the product is suitable for both vegetarians and vegans.
| Content per daily dose (1 capsule) | % of DRI | |
|---|---|---|
| L-Theanine (Suntheanine®) | 200 mg | * |
DRI = Daily Reference Intake
* DRI not established
Other ingredients
Microcrystalline cellulose Vivapur® (bulking agent), vegetarian capsule Vcaps® Plus (hydroxypropyl methylcellulose).
Dosage
Take 1 capsule daily, 30–60 minutes before bedtime, on an empty stomach. If you have difficulty swallowing, the capsule can be opened and the contents sprinkled into water and consumed immediately.
Please note
Do not exceed the recommended daily dose. Keep out of reach of children. Food supplements should not be used as a substitute for a varied diet. A varied and balanced diet and a healthy lifestyle are important. Store in a dry, dark place at room temperature. Do not expose food supplements to direct sunlight, humid environments, or heat sources. Consult your physician before use if you are pregnant, breastfeeding, or have a medical condition. Store in a cool, dry place. Made in the EU. Close the container tightly.
Is L-Theanine 200 mg free from unnecessary additives?
Yes, the product contains no artificial colors, preservatives, or unnecessary additives. It uses microcrystalline cellulose (Vivapur®) as a filler and a vegetable capsule of the Vcaps® Plus type.
What is L-Theanine 200 mg (Suntheanine®)?
L-Theanine 200 mg is a dietary supplement that contains the pure amino acid L-theanine in the form of Suntheanine®. L-theanine is a naturally occurring amino acid found in green tea and is known for its ability to promote mental relaxation without causing fatigue. Suntheanine® is one of the most well-studied and high-quality forms of L-theanine used in premium supplements for support of mental balance, focus, and stress management.
What does L-theanine do in the body?
L-theanine affects the brain's signaling system and contributes to a calm yet focused mental state. It is known to influence the activity of certain neurotransmitters, including GABA, serotonin, and dopamine, which are linked to mood, relaxation, and mental clarity. L-theanine may also increase the presence of alpha waves in the brain, which is often associated with a state of calm concentration.
What effects can L-theanine have on stress and mental balance?
L-theanine is often used to support mental relaxation during stress and mental strain. Many find that L-theanine can help reduce feelings of inner turmoil and mental noise while maintaining focus and clarity. This makes L-theanine commonly used by individuals who want to manage stress without feeling drowsy.
Can L-theanine help with sleep problems?
L-theanine is sometimes used to support better sleep as it can help calm the nervous system. Unlike many other substances used for sleep, L-theanine works by promoting relaxation rather than directly making the body tired. Therefore, it may help the body wind down before bedtime.
What is Suntheanine®?
Suntheanine® is a patented and highly pure form of L-theanine produced through an advanced fermentation process. It is identical to the L-theanine that naturally occurs in tea leaves. Suntheanine® is one of the most studied forms of L-theanine and is often used in clinical research and in premium supplements.
How does Suntheanine® differ from regular L-theanine?
Suntheanine® is a standardized and highly pure form of L-theanine. It is produced through a controlled process that ensures consistent quality and purity. This makes it often used in formulations where high quality and stable effect are important. Standardized means that Suntheanine® is guaranteed to contain an exact, established amount of L-theanine (usually 100%) in each batch, manufactured through a patented, controlled fermentation process. This distinguishes it from herbal extracts (e.g., green tea) where the theanine content can vary significantly (2–5% or more) depending on the plant, harvest, and extraction method. With Suntheanine®, you get consistent dosing, purity, and effect. This is crucial for clinical studies and reliable formulations.
In what situations is L-theanine often used?
L-theanine is often used in dietary supplements to support mental balance, focus, and stress management. It is common in formulations for concentration, calm energy, and evening routines for relaxation. It is also sometimes used in combination with caffeine to promote focused mental performance.
How should L-Theanine 200 mg be taken?
The recommended dosage is one capsule daily. The product can be taken with or without food. Some prefer to take L-theanine in the morning for mental clarity, while others use it in the evening to support relaxation before sleep. Generally, we recommend taking L-Theanine 200 mg 30–60 minutes before bedtime.
Is L-theanine safe to take daily?
L-theanine is generally considered well-tolerated and is often used as a daily supplement. As it is a naturally occurring amino acid found in green tea, it is used by many as support for mental balance and focus.
Can L-Theanine 200 mg be taken by vegetarians and vegans?
Yes, L-Theanine 200 mg can be taken by vegetarians and vegans.