20 Best L Theanine 100 Mg [2022]

Are you looking for the best l theanine 100 mg? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling l theanine 100 mg.

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1 Spring Valley L-Theanine 100 mg Mood Health, 100 Capsules Spring Valley L-Theanine 100 mg Mood Health, 100 Capsules
2 Life Extension L-Theanine, 100 mg, 60 Vegetarian Capsules — Supports a Calming & Mood Enhancing... Life Extension L-Theanine, 100 mg, 60 Vegetarian Capsules — Supports a Calming & Mood Enhancing...
3 Jarrow Formulas Theanine 100 mg - 60 Veggie Caps - Neurologically Active Amino Acid - Found in Green... Jarrow Formulas Theanine 100 mg - 60 Veggie Caps - Neurologically Active Amino Acid - Found in...
4 L-Theanine, 100 mg, 70 Vegetarian Capsules, 2 Pack (140 Total), Stress Free, Relaxation, Focus,... L-Theanine, 100 mg, 70 Vegetarian Capsules, 2 Pack (140 Total), Stress Free, Relaxation, Focus,...
5 Stress-Relax Chewable Suntheanine L-Theanine 100 mg by Natural Factors, Non-Drowsy Stress Support... Stress-Relax Chewable Suntheanine L-Theanine 100 mg by Natural Factors, Non-Drowsy Stress Support...
6 NOW Supplements, L-Theanine 100 mg with Inositol and Taurine, Tension Management*, 90 Chewables NOW Supplements, L-Theanine 100 mg with Inositol and Taurine, Tension Management*, 90 Chewables
7 Healthy Origins L-Theanine (AlphaWave) 100 mg, 180 Veggie Caps Healthy Origins L-Theanine (AlphaWave) 100 mg, 180 Veggie Caps
8 Nature's Way L-Theanine, Suntheanine Brand, Patented Amino Acid, 200 mg Potency, 180 Capsules Nature's Way L-Theanine, Suntheanine Brand, Patented Amino Acid, 200 mg Potency, 180 Capsules
9 Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules) Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules)
10 Natures Way, L Theanine, 60 Veg Capsules Natures Way, L Theanine, 60 Veg Capsules
11 L-Theanine Capsules - Ultra Potency L Theanine 100 MG with Vitamin B6 - Natural Support for Brain,... L-Theanine Capsules - Ultra Potency L Theanine 100 MG with Vitamin B6 - Natural Support for...
12 L-Theanine, 100 mg, 70 Vegetarian Capsules, Stress Free, Relaxation, Focus, Non-GMO, Gluten Free,... L-Theanine, 100 mg, 70 Vegetarian Capsules, Stress Free, Relaxation, Focus, Non-GMO, Gluten Free,...
13 Caffeine 100mg, L-Theanine 200mg — 120 Count (V-Capsules) / 120 Servings: Manufactured in a... Caffeine 100mg, L-Theanine 200mg — 120 Count (V-Capsules) / 120 Servings: Manufactured in a...
14 Swanson Amino Acid Suntheanine L-Theanine 100 Milligrams 60 Veg Capsules Swanson Amino Acid Suntheanine L-Theanine 100 Milligrams 60 Veg Capsules
15 Country Life L-Theanine 100 mg - 60 Smooth Melts - Mint Flavored - Promotes Relaxation & Mental... Country Life L-Theanine 100 mg - 60 Smooth Melts - Mint Flavored - Promotes Relaxation & Mental...
16 L-Theanine Calm-Plex with GABA and 5-HTP (Suntheanine) (100 mg, 60 Medium Capsules) by ProHealth L-Theanine Calm-Plex with GABA and 5-HTP (Suntheanine) (100 mg, 60 Medium Capsules) by ProHealth
17 L-Theanine Calm-Plex with GABA and 5-HTP (Suntheanine) (100 mg, 60 Medium Capsules) by ProHealth - 2... L-Theanine Calm-Plex with GABA and 5-HTP (Suntheanine) (100 mg, 60 Medium Capsules) by ProHealth -...
18 Spring Valley L-Theanine 100 mg Mood Health, 100 Capsules (Pack of 2) Spring Valley L-Theanine 100 mg Mood Health, 100 Capsules (Pack of 2)
19 Metabolic Maintenance L-Theanine - 100mg Suntheanine Vegan Amino Acid Supplement - Support Mood,... Metabolic Maintenance L-Theanine - 100mg Suntheanine Vegan Amino Acid Supplement - Support Mood,...
20 NOW Supplements, L-Theanine 100 mg with Decaf Green Tea, Stress Management*, 90 Veg Capsules NOW Supplements, L-Theanine 100 mg with Decaf Green Tea, Stress Management*, 90 Veg Capsules
Bestseller No. 2
Life Extension L-Theanine, 100 mg, 60 Vegetarian Capsules — Supports a Calming & Mood Enhancing...
  • HEALTHY STRESS RESPONSE - L-Theanine is an amino acid found in tea that produces a calming effect by favorably modulating several aspects of brain...
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product...
  • CALMING EFFECTS AT THE CELLULAR LEVEL - L-Theanine has been shown to modulate the formation of the neurotransmitter GABA (gamma amino butyric acid)....
  • SIMILAR EFFECTS TO MASSAGE AND MEDITATION - Studies show that the calming effects of L-Theanine encourage brainwave patterns that are similar to those...
  • INGREDIENTS MATTER - Sourced using only the finest raw ingredients with the purity and potency your body deserves. The majority of our products are...
SaleBestseller No. 3
Jarrow Formulas Theanine 100 mg - 60 Veggie Caps - Neurologically Active Amino Acid - Found in Green...
  • Neurologically Active Amino Acid - Theanine is a unique amino acid found almost exclusively in green tea that exerts beneficial effects on brain...
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product...
  • Relaxation & Pleasure - Theanine supports relaxation without causing drowsiness, as measured by increased generation of alpha-waves. Theanine may...
  • Veggie Caps - Take one veggie capsule once or twice per day with water or juice on an empty stomach or as directed by your qualified healthcare...
  • Superior Nutrition & Formulation - The goal of Jarrow Formulas is to promote optimal health with high-quality, effective, affordable, and superior...
Bestseller No. 4
L-Theanine, 100 mg, 70 Vegetarian Capsules, 2 Pack (140 Total), Stress Free, Relaxation, Focus,...
  • L-Theanine is an Amino Acid found in Green and Black Tea. It’s best known for its supportive properties relating to Mood, Focus, and Stress...
  • Allergen-Free / Hypoallergenic Formula that’s 100% drug free, without the use of the chemical excipients found in similar products
  • Gluten Free I NON-GMO I 100% Vegetarian. Does Not Contain: Artificial Colors, Flavors, Preservatives, Fish, Shellfish, Peanuts, Tree Nuts, Milk, Soy,...
  • Each 2-Pack delivers 140 capsules, over a 2 month’s supply when used as directed (2 per day)
  • Full Transparency – We are proud to be the only brand on Amazon sharing our certified test results for every batch in our listings. Test results for...
Bestseller No. 5
Stress-Relax Chewable Suntheanine L-Theanine 100 mg by Natural Factors, Non-Drowsy Stress Support...
  • Non-drowsy peace of mind: Feel calm and stay sharp with help from 100 mg of natural L-theanine in a delicious chewable; Fast-acting support for...
  • Calm and focused: Promotes calmness and helps stimulate an overall sense of relaxation; Perfect for working through daytime stress and relaxing at...
  • Natural ingredients: Suntheanine is a pure source of L-Theanine, an amino acid found in green tea and processed for maximum calming effects
  • Two tablets: Take up to 3 times daily; Vegan, non-GMO, non-habit forming and free of gluten and soy; Tropical flavored
  • Third-party certified: Independently tested for GMOs and over 700 contaminants using advanced technology such as mass spectrometry to ensure purity...
Bestseller No. 6
NOW Supplements, L-Theanine 100 mg with Inositol and Taurine, Tension Management*, 90 Chewables
  • Promotes Relaxation*
  • Healthy Vascular Function*
  • With Inositol and Taurine
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our...
  • Packaged in the USA by a family owned and operated company since 1968
SaleBestseller No. 7
Healthy Origins L-Theanine (AlphaWave) 100 mg, 180 Veggie Caps
  • A WAVE OF RELAXATION: L-Theanine is an amino acid found in green tea leaves, and is known to be one of nature’s natural relaxants: it directly...
  • The AlphaWave Difference: Since L-Theanine is found in tea leaves at a very low concentration, it is not practical to produce L-Theanine from Green...
  • Profile Proven Quality Assurance: AlphaWave L-Theanine is manufactured with Profile Proven quality assurance. This quality control program was started...
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when...
Bestseller No. 8
Nature's Way L-Theanine, Suntheanine Brand, Patented Amino Acid, 200 mg Potency, 180 Capsules
  • Promotes relaxation.*
  • Contains the patented form of L-theanine, Suntheanine.
  • Contains 100 mg L-theanine per serving.
  • Helps you get the rest and relaxation you need.*
  • Gluten-free and vegetarian. No salt, yeast-derived ingredients, corn, wheat, soy, dairy, or artificial colors, flavors, or preservatives.
Bestseller No. 9
Klaire Labs L-Theanine - 100mg Suntheanine to Promote Promote Relaxation (60 Capsules)
  • Promote Relaxation - L-theanine is a unique amino acid compound found in green tea, and is noted for its calming benefits.*
  • Suntheanine Pure L-Theanine - Suntheanine brand pure L-theanine is produced through a patented manufacturing process. Studies with Suntheanine show it...
  • Neurotransmitter Support - L-theanine has been studied for its ability to reduce glutamate uptake and support the body's serotonin, dopamine, and...
  • Hypoallergenic* - Keeping sensitives in mind, this product is free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts,...
  • Practitioner Trusted - Trusted by healthcare practitioners since 1969, Klaire Labs products are developed closely with physicians and are intended to...
Bestseller No. 10
Natures Way, L Theanine, 60 Veg Capsules
  • Promotes relaxation.*
  • Contains the patented form of L-theanine, Suntheanine.Keep out of reach of children
  • Contains 100 mg L-theanine per serving.
  • Helps you get the rest and relaxation you need.*
  • Gluten-free and vegetarian. No salt, yeast-derived ingredients, corn, wheat, soy, dairy, or artificial colors, flavors, or preservatives.
Bestseller No. 11
L-Theanine Capsules - Ultra Potency L Theanine 100 MG with Vitamin B6 - Natural Support for Brain,...
  • Cognitive Support - GLS Pharmaceuticals L-Theanine 100 MG supplement is designed for those, who want to get sharpened brain functions. Our capsules...
  • Stress & Sleep - Our L-Theanine with vitamin B6 supplement is great for keeping your mood stable, experiencing less stress. It promotes healthy stress...
  • Balanced Mood - Our L-Theanine and Vitamin B6 is natural mood stabilizer that helps elevate your mood, balancing your emotions. It provides you with...
  • Overall Wellbeing - L-Theanine is one of the most essential amino acids, needed for proper body functions. It plays a vital role in the immune system,...
  • High-Quality Supplements - Here, at GLS Pharmaceuticals, we work hard to advance the quality of our supplements and provide our customers with...
Bestseller No. 12
L-Theanine, 100 mg, 70 Vegetarian Capsules, Stress Free, Relaxation, Focus, Non-GMO, Gluten Free,...
  • L-Theanine is an Amino Acid found in Green and Black Tea. It’s best known for its supportive properties relating to Mood, Focus, and Stress...
  • Allergen-Free / Hypoallergenic Formula that’s 100% drug free, without the use of the chemical excipients found in similar products
  • Gluten Free I NON-GMO I 100% Vegetarian. Does Not Contain: Artificial Colors, Flavors, Preservatives, Fish, Shellfish, Peanuts, Tree Nuts, Milk, Soy,...
  • Each bottle delivers 70 capsules, over a month's supply when used as directed (2 per day)
  • Full Transparency – We are proud to be the only brand on Amazon sharing our certified test results for every batch in our listings. Test results for...
Bestseller No. 13
Caffeine 100mg, L-Theanine 200mg — 120 Count (V-Capsules) / 120 Servings: Manufactured in a...
  • INSTRUCTIONS - Take one capsule with food up to four times per day. Do not exceed the recommended dose.
  • FORMULA - Exclusively formulated with high-grade ingredients, free from any redundant fillers; vegan and gluten free.
  • QUALITY - Professionally manufactured and assessed in a cGMP-registered facility in the US; certified for potency, purity, and integrity.
  • WARRANTY - We have a 180-days (6 months), no questions asked, full refund policy.
SaleBestseller No. 14
Swanson Amino Acid Suntheanine L-Theanine 100 Milligrams 60 Veg Capsules
  • Supports balanced mental health and emotional well-being

  • Maintains a feeling of calm while remaining alert

  • Helps ease nervous tension

  • Vegetarian
  • Per GMP guidelines set forth by the FDA, most products are formulated for 24 months from the date of manufacture. Liquids and probiotics are...
Bestseller No. 15
Country Life L-Theanine 100 mg - 60 Smooth Melts - Mint Flavored - Promotes Relaxation & Mental...
  • REDUCE STRESS - After participants took L-Theanine, they performed mental tasks. Compared to the patients who took a placebo, they had lower stress...
  • BRAIN FUNCTION - L-Theanine supplementation helps increase attention and improve memory.
  • CARDIOVASCULAR SUPPORT - Theanine improves blood vessel function by increasing nitric oxide production. It also prevents fat peroxidation of LDL...
  • AUTHENTICITY OF INGREDIENTS - We always use a pure form of each ingredient and all our ingredients are laboratory tested to ensure accurate...
  • ACCURACY OF LABELING - We always ensure that if an ingredient appears on our supplement facts label, its in our product in the exact ratios and...
Bestseller No. 16
L-Theanine Calm-Plex with GABA and 5-HTP (Suntheanine) (100 mg, 60 Medium Capsules) by ProHealth
  • Synergistic formula enhances mood & well-being.
  • Maximum calming effects from brain-quieting GABA & support for optimal mood levels from 5-HTP
  • L-Theanine Calm-plex is a synergistic formula that effectively combines L-Theanine with GABA and 5-HTP for relaxation plus mood support. L-Theanine...
  • Serving size: 1 capsule. Servings per container: 60. Gluten free.
  • Each capsule contains: 100 mg Suntheanine L-Theanine, 275 mg GABA, 10 mg 5-HTP
Bestseller No. 17
L-Theanine Calm-Plex with GABA and 5-HTP (Suntheanine) (100 mg, 60 Medium Capsules) by ProHealth - 2...
  • Synergistic formula enhances mood & well-being.
  • Maximum calming effects from brain-quieting GABA & support for optimal mood levels from 5-HTP
  • L-Theanine Calm-plex is a synergistic formula that effectively combines L-Theanine with GABA and 5-HTP for relaxation plus mood support. L-Theanine...
  • Serving size: 1 capsule. Servings per container: 60. Gluten free.
  • Each capsule contains: 100 mg Suntheanine L-Theanine, 275 mg GABA, 10 mg 5-HTP
Bestseller No. 19
Metabolic Maintenance L-Theanine - 100mg Suntheanine Vegan Amino Acid Supplement - Support Mood,...
  • Promotes Relaxation - L-Theanine is an effective GABA precursor, and may support feelings of relaxation.*
  • Immune Support - L-Theanine is able to cross the blood-brain barrier. It may help support already healthy dopamine levels and the immune system.*
  • Purity, Quality, Potency - No fillers, binders, preservatives, artificial colors or flavors. Vegetarian capsules. No gluten, egg, peanuts, tree nuts,...
  • The Right Dose For You - We understand that your dosing needs vary, so we carry different levels. This is our 100 mg dose.*
  • Physician's Choice - The health care professional's choice for high-quality supplements since 1984. We base our products on the latest wellness...
Bestseller No. 20
NOW Supplements, L-Theanine 100 mg with Decaf Green Tea, Stress Management*, 90 Veg Capsules
  • STRESS MANAGEMENT*/PROMOTES RELAXATION*: L-Theanine promotes relaxation while maintaining alertness and promotes healthy cognitive function.*
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product...
  • HEALTHY VASCULAR FUNCTION*/WITH DECAF GREEN TEA: L-Theanine may also support healthy vascular function through this relaxing effect.* It is a unique...
  • CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher, Dairy Free, Egg Free, Made without Gluten, Nut Free, Soy Free, Vegan/Vegetarian
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our...

Having trouble finding a great l theanine 100 mg?

This problem is well understood by us because we have gone through the entire l theanine 100 mg research process ourselves, which is why we have put together a comprehensive list of the best l theanine 100 mgs available in the market today.

After hours of searching and using all the models on the market, we have found the best l theanine 100 mg for 2022. See our ranking below!

How Do You Buy The Best L Theanine 100 Mg?

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We understand, because we’ve already gone through the whole process of researching l theanine 100 mg, which is why we have assembled a comprehensive list of the greatest l theanine 100 mg available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for l theanine 100 mg that you consider buying. Your questions might include the following:

  • Is it worth buying an l theanine 100 mg?
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  • What factors deserve consideration when shopping for an effective l theanine 100 mg?
  • Why is it crucial to invest in any l theanine 100 mg, much less the best one?
  • Which l theanine 100 mg are good in the current market?
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We’re convinced that you likely have far more questions than just these regarding l theanine 100 mg, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for l theanine 100 mg, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible l theanine 100 mg. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an l theanine 100 mg buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available l theanine 100 mg currently available on the market.

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  1. Brand Value: Every brand of l theanine 100 mg has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an l theanine 100 mg?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your l theanine 100 mg.
  5. Customer Ratings: Number ratings grade l theanine 100 mg objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their l theanine 100 mg.
  7. Product Quality: You don’t always get what you pay for with an l theanine 100 mg, sometimes less, and sometimes more.
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John Harvards always remembers that maintaining l theanine 100 mg information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding l theanine 100 mg is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: How much L theanine can you take?

A: How much L-theanine can you take a day? There isn’t a universally recommended dose, but most people agree that 200 mg per day is sufficient. However, you can take anywhere between 50-400 mg per day without worrying about side effects. Some people go as much as 800-900 mg per day, but we wouldn’t recommend it.

Q: What is L theanine used for?

A: L-Theanine is used by some people to help lower anxiety and as a sleep aid. Others believe it helps with the immune system. Some people believe it may help prevent cancer. L-Theanine is used by some people to help relax.

Q: Can You overdose on L theanine?

A: There have been no reports of overdose or side effects of taking l theanine and drinking tea is generally safe for most people. By stimulating the production of more gaba as well as other important neurochemicals such as dopamine serotonin and norepinephrine l theanine steers the mind to naturally reduce anxious feelings and stress.

Q: Does L theanine work immediately?

A: The first thing I recommend you do if you want to make l theanine work faster is to take it on an empty stomach. Since the supplement has to travel through your stomach in order to be absorbed, it of course helps to not have anything in there. Now, this may not be the most practical tip if you want to take theanine for sudden anxiety attacks.