L-theanine is an amino acid found in tea leaves and some mushrooms. It’s a known ingredient that provides calming and relaxing effects. Thereby making it a commonly used element for reducing stress and anxiety. L-theanine supplements come in various forms, including capsules, tablets, and powders, and are often combined with other ingredients, such as caffeine or melatonin.
Before buying and determining the best L-theanine supplement, several factors must be considered first. First is the L-theanine’s purity. It’s better if it is extracted directly from tea leaves or mushrooms. Another factor is the dosage. Too little L-theanine content may not have any effect, while having too much may lead to drowsiness.
You should also consider the form it comes in. Capsules and tablets are easier to take. On the other hand, powder-type supplements may be mixed with one’s drinks or food. Additionally, some supplements may contain other ingredients, such as fillers or additives, that may not be desirable.
After researching and testing various L-theanine supplements, we have identified the top products that provide effective and reliable results.
Table of Contents
Best L-Theanine Supplements
If you’re searching for a gentle method to alleviate stress and anxiety, you might want to consider trying out L-theanine supplements. L-Theanine is a fascinating amino acid that’s naturally present in green tea leaves. Some studies suggest that L-theanine fosters a sense of calmness and enhances concentration without making you excessively tired. We’ve gathered a list of some top-notch L-Theanine supplements available on Amazon to assist you in pinpointing the perfect one tailored to your specific requirements.
Sports Research Double Strength L-Theanine Supplement
- ALERT & CALM: L-Theanine, commonly found in the flavonoid herbal green tea, is used as an ayurvedic substitute for those who want the antioxidant benefits of green tea but without caffeine. Encapsulated in a once-daily liquid softgel, our L-Theanine supports feelings of relaxation, calm, focus, and alertness*
- DOUBLE THE SUPPORT: To optimize your potential and give the utmost support, our L-theanine 200 mg amino acid softgels provide double the amount of L-theanine green tea extract commonly found in energy supplements in a convenient max-strength formula
- PATENTED SUNTHEANINE: Formulated with patented and clinically researched Suntheanine—you get all of the alertness and relaxation (+ the increase in alpha brain waves) without the jitters or crash of caffeine, energy pills, or energy drinks*
If you’re looking for a non-drowsy supplement to support your brain health, focus, relaxation, and alertness, then Sports Research Double Strength L-Theanine Supplement is worth considering.
| What We Like: | What We Don’t Like: |
| Encapsulated in a once-daily liquid soft gel, our L-Theanine supports feelings of relaxation, calm, focus, and alertness. Double the amount of L-theanine green tea extract commonly found in energy supplements in a convenient max-strength formula. Formulated with patented and clinically researched Suntheanine—no jitters or crash of caffeine, energy pills, or energy drinks. | Some users report that the soft gels were stuck together in the bottle. May not be suitable for those who are sensitive to coconut oil. Some users may not experience noticeable effects. |
The Sports Research Double Strength L-Theanine Supplement is a high-quality product, carefully crafted with 100% organic coconut oil. Notably, it’s a non-GMO-certified, gluten-free, and soy-free formula. What’s more, the soft gels are a breeze to take down and leave no undesirable lingering taste.
This supplement is an excellent choice for individuals seeking a caffeine substitute with a natural twist. It maintains alertness and concentration without subjecting you to the jitters or energy crashes commonly associated with caffeine. Furthermore, it is ideal for those needing relaxation and mental calm after a taxing day.
Nature’s Trove L-Theanine 200mg 120 Vegetarian Capsules
- L-Theanine 200mg may promote relaxation without drowsiness. Also may restores a sense of calm.
- Found naturally in green tea
- Natural Ingredients - Good Health from the Source!
When in search of a natural method to enhance relaxation and tranquility, Nature’s Trove L-Theanine supplement could be the suitable option for your needs.
| What We Like: | What We Don’t Like: |
| Restores calmness without causing drowsiness Made from natural ingredients found in green tea Produced in a GMP NSF-certified facility in the USA | May not work for everyone Some users report no noticeable effect Capsules may be too large for some people to swallow |
Nature’s Trove L-Theanine supplement offers a generous 200mg of L-Theanine, an amino acid renowned for its ability to induce relaxation and tranquility, all without inducing drowsiness. It’s worth noting that this supplement is crafted from natural green tea components and is manufactured in a GMP NSF-certified facility right here in the USA.
For your convenience, it’s available in a container housing 120 vegetarian capsules, simplifying the intake process. However, it’s important to acknowledge that not every user experiences a noticeable effect, suggesting that its efficacy may vary from person to person. Furthermore, some individuals may find the capsules somewhat large and challenging to swallow.
NOW L-Theanine 200 mg with Inositol
- STRESS MANAGEMENT*/PROMOTES RELAXATION*: Promotes relaxation without the drowsiness or negative side effects associated with other calming agents*
- HEALTHY VASCULAR FUNCTION*/WITH INOSITOL: Formulation includes inositol, a member of the B-vitamin family that is essential for brain and nervous system health*
- CLASSIFICATIONS/CERTIFICATIONS: Vegan, Kosher, Non-GMO
For those interested in a natural approach to encourage relaxation and maintain healthy cardiovascular function, it’s advisable to explore NOW L-Theanine 200 mg with Inositol.
| What We Like: | What We Don’t Like: |
| Promotes relaxation without drowsiness or negative side effects Supports healthy cardiovascular function Includes Inositol for brain and nervous system health | May melt or get damaged if exposed to heat or sunlight Vegan capsules may not be suitable for everyone Some users may experience mild side effects like headaches or nausea |
NOW L-Theanine 200 mg with Inositol is a great choice for anyone who wants to manage stress and anxiety without feeling tired or groggy. This supplement contains twice the amount of L-Theanine as the regular strength product, which means you’ll get more of the amino acid that promotes relaxation and improves cognitive function. In addition, the inclusion of Inositol makes this supplement even more effective for brain and nervous system health.
Remember that the capsules may melt or get damaged if exposed to heat or sunlight, so storing them in a cool, dry place is important. Also, while vegan capsules are a plus for many people, some users may prefer other capsules or tablets. Finally, some users may experience mild side effects like headaches or nausea, although these are relatively rare.
Double Wood Supplements L-Theanine Supplement
- Third Party Tested and Manufactured in the USA from Globally Sourced Ingredients: Doublewood L Theanine capsules are third party tested and Manufactured in the USA from Globally Sourced Ingredients
- L-Theanine is perfect for those that need to remain calm while retaining a sharp mental edge
- Non-GMO and Gluten Free: Double Wood's L-Theanine is Non-GMO and Gluten Free
Double Wood Supplements L-Theanine Supplement might be a good choice if you’re looking for a supplement that can help you relax and stay sharp.
| What We Like: | What We Don’t Like: |
| Third-party tested and manufactured in the USA Supports relaxation without causing drowsiness Non-GMO and gluten-free | Takes some time to take effect May not be strong enough for some users Capsules may be difficult to swallow for some people |
This supplement offers a valuable solution for individuals aiming to maintain a calm demeanor while preserving their mental acuity. Its non-GMO and gluten-free composition adds to its appeal.
The Double Wood Supplements L-Theanine Supplement is a product of exceptional quality. It undergoes third-party testing and is proudly manufactured in the USA, ensuring you can place your trust in its reliability. It excels at promoting relaxation without the burden of drowsiness, making it especially suitable for those requiring sustained alertness and concentration.
However, it’s important to note that some patience may be required as the supplement might not deliver immediate effects. Additionally, certain users might find the product potency insufficient for their needs. Lastly, for some, the size of the capsules could present challenges when it comes to swallowing.
Doctor’s BEST L-Theanine Supplement
- Doctor’s Best L-Theanine contains Suntheanine, a pure form of L-Theanine on the market produced via a patented process that mimics the natural process in green tea leaves. L-Theanine helps promote a healthy mood and a restful relaxed state while maintaining daytime alertness
- Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
- CALMNESS – L-Theanine supports relaxation and a sense of calm without causing drowsiness or loss of focus. This amino acid found naturally in tea helps support healthy stress response, relaxation, focus and memory
When seeking a supplement to assist in stress reduction and relaxation promotion, Doctor’s BEST L-Theanine Supplement could be the suitable option for you.
| What We Like: | What We Don’t Like: |
| Doctor’s BEST L-Theanine Supplement contains Suntheanine, a pure form of L-Theanine on the market produced via a patented process that mimics the natural process in green tea leaves. L-Theanine supports relaxation and a sense of calm without causing drowsiness or loss of focus. L-Theanine is a powerful amino acid that enhances cognitive performance and alertness. | Exposure to heat or sunlight may lead to melting/damage of the product. Hence, customers are expected to be available during the product delivery. This product may only work for some. The effects of the supplement may take time to become noticeable. |
Doctor’s BEST L-Theanine Supplement is a great way to support your stress response, relaxation, focus, and memory. It also helps reduce the negative effects of caffeine. The supplement is made from 100% Suntheanine, a patented pure form of the amino acid L-Theanine produced in Japan from green tea leaves.
If you’re looking for a supplement to help you stay calm and focused throughout the day, Doctor’s BEST L-Theanine Supplement may be worth trying. However, it’s important to note that the supplement’s effects may vary from person to person and may take time to become noticeable.
Pure Encapsulations L-Theanine
- Amino Acid Supplement: Pure Encapsulations L-Theanine is an amino acid supplement for men and women that supports relaxation without causing drowsiness
- Stress Moderation: This L-Theanine supplement may provide support for occasional nervous tension and irritability, helping to moderate stress
- Nervous System Support: L-Theanine can support moderation of the effects of caffeine on the central nervous system
For those in search of a premium L-Theanine supplement, Pure Encapsulations L-Theanine is worth considering. This hypoallergenic amino acid supplement can aid in relaxation, stress management, and support for the nervous system.
| What We Like: | What We Don’t Like: |
| Pure Encapsulations L-Theanine is formulated using pure ingredients and is free from unnecessary additives and common allergens. It can support moderation of the effects of caffeine on the central nervous system. This L-Theanine supplement may support occasional nervous tension and irritability, helping to moderate stress. | Some people may find the price a bit higher than other L-Theanine supplements. It may not work for everyone, and some may not notice any effects. The capsules are a bit large and may be difficult to swallow for some people. |
If you’re looking for an effective L-Theanine supplement that can help you relax and manage stress, Pure Encapsulations L-Theanine is definitely worth considering. The supplement is formulated using pure ingredients and is free from unnecessary additives and common allergens, making it a great choice for people with allergies or sensitivities.
In addition to supporting relaxation and stress moderation, Pure Encapsulations L-Theanine can also help moderate the effects of caffeine on the central nervous system. This can be particularly helpful if you’re sensitive to caffeine and want to reduce its stimulating effects.
While Pure Encapsulations L-Theanine is generally well-tolerated, some people may find the price a bit higher than other L-Theanine supplements. Additionally, the capsules are a bit large and may be difficult to swallow for some people. Finally, it’s worth noting that L-Theanine may not work for everyone, and some may not notice any effects.
Life Extension L-Theanine
- Life Extension L-Theanine, amino acid theanine, calm, relaxation, mood, gluten-free, non-GMO, vegetarian, 100 mg, 60 capsules
- Calming brainwave patterns – L-theanine helps modulate several different aspects of brain activity for mood support. This supplement promotes specific brainwave patterns similar to those associated with performing meditation or getting a massage.
- Neurotransmitter production – The neurotransmitter gamma amino butyric acid (GABA) plays a role in influencing healthy levels of the feel-good neurotransmitters dopamine and serotonin. L-theanine helps encourage GABA production, to keep that feel-good feeling going.
Life Extension L-Theanine could supplement you if you’re looking for a natural way to promote calmness and relaxation.
| What We Like: | What We Don’t Like: |
| Promotes a calm and relaxed state of mind Modulates the formation of the neurotransmitter GABA Encourages brainwave patterns similar to those associated with meditation and massage | The product may melt or be damaged by exposure to heat or sunlight Some customers may prefer a higher dosage than 100mg Not suitable for those allergic to tea or its components |
Life Extension L-Theanine is a supplement designed to usher you into a realm of tranquility and relaxation without any unwanted side effects. It operates by elevating serotonin and dopamine levels in the brain and thwarting the binding of L-glutamic acid to glutamate receptors. Derived from tea, each capsule contains 100 mg of L-theanine.
One of L-theanine’s standout attributes lies in its capacity to regulate the production of the neurotransmitter GABA, a key player in controlling dopamine and serotonin levels. This finely tuned balance paves the way for a serene and composed mental state, equipping you to tackle stress and anxiety more easily.
Research has unveiled that L-theanine promotes brainwave patterns akin to meditation and massage, fostering relaxation and mood enhancement. If you’re pursuing a natural approach to instilling a sense of calmness and relaxation into your daily routine, this supplement is a promising addition.
However, it’s important to note that exposure to heat or sunlight may lead to melting or damage the product. Additionally, some customers may prefer a higher dosage than 100mg. Finally, if you’re allergic to tea or its components, this supplement may not suit you.
Integrative Therapeutics L-Theanine
- Healthy Stress Response Supplement*: L-Theanine is an amino acid that supports a relaxed state without diminishing daytime alertness*
- Amino Acid Supplement*: L-Theanine is an amino acid that helps support relaxation and a healthy stress response*
- L-Theanine Supplement for Men & Women: L-theanine can support a healthy stress response*
Integrative Therapeutics L-Theanine could be a good choice if you’re looking for a natural way to support a relaxed state.
| What We Like: | What We Don’t Like: |
| Supports a relaxed state without diminishing daytime alertness Helps support relaxation and a healthy stress response Vegan, soy-free, and dairy-free | What We Don’t Like: Not strong enough for some users May cause vivid dreams in some users Expensive compared to other L-theanine supplements |
Integrative Therapeutics L-Theanine is an amino acid supplement that can help you relax and manage stress. It is vegan, soy-free, and dairy-free, making it suitable for different diets.
One of the benefits of this supplement is that it supports a relaxed state without diminishing daytime alertness. This means you can take it during the day without feeling drowsy. It also helps support relaxation and a healthy stress response, which can benefit those dealing with anxiety or other stress-related issues.
However, some users may find the supplement not strong enough for their needs. Additionally, some users have reported experiencing vivid dreams while taking the supplement. Finally, Integrative Therapeutics L-Theanine is more expensive than other L-Theanine supplements on the market.
Buying Guide
When looking for the best L-Theanine supplement, there are a few important factors to consider. Here are some things to keep in mind when making your purchase:
Purity and Quality
The purity and quality of the L-Theanine supplement are crucial. Look for products made with high-quality ingredients that have been third-party tested for purity. You want to ensure that your product is free from contaminants and other harmful substances.
Dosage
The dosage of L-theanine can vary from product to product. Choosing a supplement with the appropriate dosage for your needs is important. Some products may contain a higher dosage, so read the label carefully before purchasing.
Form
L-Theanine supplements come in various forms, including capsules, tablets, and powders. Consider which form is most convenient for you and your lifestyle. For example, if you are always on the go, you may prefer a capsule or tablet that can be easily taken.
Price
Price is always a consideration when making a purchase. However, don’t let price be the only factor in your decision. Cheaper products may not always be the best quality, so balance price with other factors like purity and dosage.
Customer Reviews
Reading customer reviews can be a helpful way to get an idea of the effectiveness and quality of a product. Look for products with positive reviews and high ratings from other users.
Considering these factors, you can make an informed decision when choosing the best L-Theanine supplement for your needs.
Frequently Asked Questions
What is the difference between Suntheanine and L-Theanine?
Suntheanine is a patented form of L-Theanine that is produced via a patented fermentation process. The fermentation process results in a purer form of L-theanine that is more effective than regular L-theanine. However, there is no conclusive evidence that Suntheanine is superior to regular L-Theanine. (Source)
How much L-Theanine should you take per day?
The recommended dosage of L-theanine varies depending on the individual and the reason for taking it. However, most studies have used 200-400mg daily doses. It is important to start with a lower dose and gradually increase it to avoid any potential side effects.
Is it safe to take L-Theanine every night?
L-Theanine is generally considered safe and non-toxic. It is not habit-forming and does not cause drowsiness or sedation. However, it is always important to consult with your healthcare provider before starting any new supplement regimen, especially if you are taking medication or have a medical condition.
Disclaimer: Last update on 2024-10-08 / Affiliate links / Images from Amazon Product Advertising API.
This content is provided solely for educational reasons and should not be seen as medical guidance. It’s important to consult with a healthcare expert prior to making any changes to your health regimen, including dietary adjustments or the use of supplements.
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