L-Theanine 200 mg
Greatlife L-Theanine is a pure and well-studied amino acid that occurs naturally in green tea and plays an important role in supporting nervous system balance and mental focus. L-Theanine is known for its relaxing and stress-reducing properties and is used to support mental clarity, a sense of inner calm and good sleep quality without causing drowsiness. Greatlife L-Theanine is a high-quality supplement, free from additives, contaminants and artificial ingredients.
- High-purity L-theanine, extracted from green tea and standardised to 98% 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
- Out of stock
L-Theanine 200 mg
Greatlife L-Theanine contains a high-quality L-theanine ingredient derived from green tea and standardised to 98% L-theanine. The ingredient has been carefully selected with a strong focus on purity, quality and a consistent L-theanine content. L-Theanine is a well-studied amino acid that occurs naturally in tea and is particularly of interest for relaxation, mental sharpness and the ability to maintain calm focus without causing drowsiness. This supplement is pure and free from unnecessary additives and GMOs.
For best results, we recommend taking L-Theanine approximately 30–60 minutes before bedtime when the aim is to support relaxation and sleep quality. It can also be taken during the day when calm focus is needed or during periods of high mental demand. The product can be used daily and is suitable both for occasional use and as part of a long-term routine.
From a biological perspective, L-Theanine has been studied for its effects on signalling within the nervous system, including its relationship with GABA, glutamate and dopamine. Studies have also found an association between L-Theanine and increased alpha brain-wave activity, which is linked to a state of relaxed alertness. This makes L-Theanine particularly interesting when the aim is to combine mental clarity with a calmer state of mind.
Why L-Theanine?
L-Theanine has several interesting properties compared with many other ingredients used for relaxation and mental focus:
Support for relaxation and mental clarity
- L-Theanine may help promote a calm state without normally causing drowsiness.
- It is particularly of interest for calm focus and mental concentration.
During periods of stress
- L-Theanine has been studied in relation to perceived stress and relaxation.
- It may be a useful supplement during periods of high mental demand or when it is difficult to unwind.
For evening use and sleep
- L-Theanine is often taken in the evening because it may promote relaxation without acting like a traditional sleep aid.
- It may therefore be particularly suitable for people who find it difficult to wind down before bedtime.
L-Theanine from green tea with 98% purity
Greatlife uses a carefully selected L-theanine ingredient derived from green tea with a very high L-theanine content of 98%. The high level of standardisation means that the ingredient consists predominantly of L-theanine and provides a consistent amount of the active amino acid in each capsule. For us, the purity and quality of the ingredient are essential, which is why we choose concentrated and well-defined ingredients over simpler alternatives with a lower content of the active substance.
High-quality L-Theanine
Greatlife L-Theanine is a pure, highly concentrated L-theanine product, free from dairy, soya, sugar, gluten and GMOs, as well as artificial sweeteners, colours, preservatives, hydrogenated oils, corn syrup and magnesium stearate. The product is supplied in a dark glass jar free from BPA, phthalates and other endocrine-disrupting substances. It is manufactured in the EU under high quality and hygiene standards and is suitable for vegetarians and vegans.
| Content per daily dose (1 capsule) | % of DRI | |
|---|---|---|
| L-Theanine | 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.