20 Best L Theanine 200 Mg [2024]

Are you looking for the best l theanine 200 mg? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling l theanine 200 mg.

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1 NOW Supplements, L-Theanine 200 mg with Inositol, Stress Management*, 120 Veg Capsules NOW Supplements, L-Theanine 200 mg with Inositol, Stress Management*, 120 Veg Capsules
2 L-Theanine 200mg Super Value Size - 365 Vegetarian Capsules L-Theanine 200mg Super Value Size - 365 Vegetarian Capsules
3 Sports Research Double Strength ‘Suntheanine’ L-Theanine with Organic Coconut Oil - Promotes... Sports Research Double Strength ‘Suntheanine’ L-Theanine with Organic Coconut Oil - Promotes...
4 L-Theanine 200mg by Nature's Trove - 120 Vegetarian Capsules L-Theanine 200mg by Nature's Trove - 120 Vegetarian Capsules
5 Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free
6 NOW Supplements, L-Theanine 200 mg with Inositol, Stress Management*, 60 Veg Capsules NOW Supplements, L-Theanine 200 mg with Inositol, Stress Management*, 60 Veg Capsules
7 L Theanine 200mg | 400 Capsules | Value Size | Non-GMO, Gluten Free Supplement | by Horbaach L Theanine 200mg | 400 Capsules | Value Size | Non-GMO, Gluten Free Supplement | by Horbaach
8 Integrative Therapeutics L-Theanine 200 mg - Suntheanine Brand L-Theanine - Promotes a Relaxed State... Integrative Therapeutics L-Theanine 200 mg - Suntheanine Brand L-Theanine - Promotes a Relaxed...
9 Bluebonnet Nutrition L-Theanine 200mg, Free-Form Amino Acid, Promotes Relaxation*, Soy-Free,... Bluebonnet Nutrition L-Theanine 200mg, Free-Form Amino Acid, Promotes Relaxation*, Soy-Free,...
10 SOURCE NATURALS Serene Science L-Theanine 200 Mg Capsule, 120 Count SOURCE NATURALS Serene Science L-Theanine 200 Mg Capsule, 120 Count
11 L-Theanine 200mg (Double-Strength) with Passion Flower Herb - Reducing Stress and Promoting... L-Theanine 200mg (Double-Strength) with Passion Flower Herb - Reducing Stress and Promoting...
12 Now Foods L-Theanine 200 Mg 60 Veg Caps Pack of 2 Now Foods L-Theanine 200 Mg 60 Veg Caps Pack of 2
13 L-Theanine 200mg, 120 Capsules — Relaxation and Sleep Support — Soy Free, Gluten Free, Non-GMO... L-Theanine 200mg, 120 Capsules — Relaxation and Sleep Support — Soy Free, Gluten Free,...
14 EZ Melts L-Theanine, 200 mg, Sublingual Vitamins, Vegan, Zero Sugar, Natural Cherry Flavor, 60 Fast... EZ Melts L-Theanine, 200 mg, Sublingual Vitamins, Vegan, Zero Sugar, Natural Cherry Flavor, 60...
15 Country Life L-theanine, 200 mg, 60-Count Country Life L-theanine, 200 mg, 60-Count
16 Source Naturals Serene Science L-Theanine 200mg - 60 Tablets Source Naturals Serene Science L-Theanine 200mg - 60 Tablets
17 Puritan's Pride L-Theanine, Nootropic 30 Servings (200mg Per Serving), 60 Capsules Puritan's Pride L-Theanine, Nootropic 30 Servings (200mg Per Serving), 60 Capsules
18 L-Theanine 200mg — 150 Count (V-Capsules) / 150 Servings: Manufactured in a cGMP-Registered... L-Theanine 200mg — 150 Count (V-Capsules) / 150 Servings: Manufactured in a cGMP-Registered...
19 Solaray L-Theanine 200mg w/Green Tea Leaf 100mg | Relaxation, Stress, Mood & Focus Support w/Out... Solaray L-Theanine 200mg w/Green Tea Leaf 100mg | Relaxation, Stress, Mood & Focus Support w/Out...
20 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
Bestseller No. 1
NOW Supplements, L-Theanine 200 mg with Inositol, Stress Management*, 120 Veg Capsules
  • STRESS MANAGEMENT*/PROMOTES RELAXATION*: Promotes relaxation without the drowsiness or negative side effects associated with other calming agents.*
  • 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 INOSITOL: Formulation includes inositol, a member of the B-vitamin family that is essential for brain and nervous...
  • CLASSIFICATIONS/CERTIFICATIONS: Vegan, Kosher, Non-GMO
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our...
SaleBestseller No. 2
L-Theanine 200mg Super Value Size - 365 Vegetarian Capsules
  • SUPER VALUE SIZE - 365 Vegetarian Capsules
  • L-Theanine 200mg may promote relaxation without drowsiness - May restore a sense of calm
  • Found naturally in green tea
  • Natural Ingredients - Good Health from the Source!
  • Made in the USA - GMP NSF Certified Facility - Kosher Certified
SaleBestseller No. 3
Sports Research Double Strength ‘Suntheanine’ L-Theanine with Organic Coconut Oil - Promotes...
  • ALERT & CALM: L-Theanine is an amino acid commonly found in green tea and is believed to help with relaxation. Suntheanine is patented, researched,...
  • PREMIUM QUALITY: Sports Research is proud to offer products using only the best ingredients available so that you can have total peace of mind in the...
  • Our products are made in cGMP compliant facilities in the United States, using only the best ingredients from domestic & international origins. For...
  • EASY TO USE: As a dietary supplement, simply take one (1) easy to swallow liquid softgel daily with or without food or as directed by your qualified...
  • THE SPORTS RESEARCH DIFFERENCE: Created in 1980, Sports Research is a privately-owned business born from a passion for fitness, wellness, and healing....
Bestseller No. 4
L-Theanine 200mg by Nature's Trove - 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!
  • Made in the USA - GMP NSF Certified Facility - Kosher Certified
  • ►► To SAVE EVEN MORE! Select our SUPER VALUE SIZE - 365 Vegetarian Capsules
Bestseller No. 5
Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free
  • 120 Capsules of L-Theanine Per Bottle
  • 200mg L-Theanine Per Serving (120 Servings)
  • Easy To Take Capsules
  • Non-GMO, Gluten Free
  • Manufactured In a GMP Compliant, FDA Registered Facility
SaleBestseller No. 6
NOW Supplements, L-Theanine 200 mg with Inositol, Stress Management*, 60 Veg Capsules
  • 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...
  • CLASSIFICATIONS/CERTIFICATIONS: Vegan, Kosher, Non-GMO
  • 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.
Bestseller No. 7
L Theanine 200mg | 400 Capsules | Value Size | Non-GMO, Gluten Free Supplement | by Horbaach
  • L-THEANINE: Amino acid mostly found in Green Tea leaves and other superfoods
  • ADVANCED FORMULATION: Each quick-release capsule delivers 200 mg of L-Theanine per serving
  • EXPERTLY CRAFTED: Our professional formula is backed by our commitment to purity and potency
  • HORBAACH MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
  • NATURALLY FREE OF: Gluten, Wheat, Yeast, Lactose, Artificial Flavor, Artificial Color & Non-GMO
Bestseller No. 8
Integrative Therapeutics L-Theanine 200 mg - Suntheanine Brand L-Theanine - Promotes a Relaxed State...
  • L-Theanine is an amino acid that supports a relaxed state without diminishing daytime alertness*
  • Suntheanine L-Theanine is an amino acid that helps support relaxation and a healthy stress response*
  • Clinically studied, L-theanine can support a healthy stress response*
  • Soy free, dairy free. No wheat, corn, or artificial colors, flavors, or preservatives
SaleBestseller No. 9
Bluebonnet Nutrition L-Theanine 200mg, Free-Form Amino Acid, Promotes Relaxation*, Soy-Free,...
  • Contains 200 mg of free-form L-Theanine (Suntheanine). Suntheanine was awarded the ?Food Ingredient Research Award? at the 1998 Food Ingredients...
  • Promotes Relaxation
  • 60 Vegetable Capsules, 60 Servings
  • Soy-Free, Gluten-Free, Non-GMO, Kosher Certified, Vegan
  • Free of milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat and soybeans. Also free of corn, yeast, gluten, barley, rice, sodium and...
SaleBestseller No. 10
SOURCE NATURALS Serene Science L-Theanine 200 Mg Capsule, 120 Count
  • L-Theanine is a non-protein amino acid.
  • L-Theanine is found almost exclusively in black and green tea.
  • HYPOALLERGENIC: contains no yeast, dairy, egg, gluten, corn,soy, or wheat.
  • Contains no sugar, starch, salt, preservatives, artificial color, flavor or fragrance.
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when...
Bestseller No. 11
L-Theanine 200mg (Double-Strength) with Passion Flower Herb - Reducing Stress and Promoting...
  • Lasting Calmness: L Theanine is known for reducing stress and promoting relaxation without sedation.
  • Supports Brain Health: L-Theanine is a powerful Amino Acid that is derived from green & black tea. Many people take L-Theanine supplements to help...
  • Superior Quality: Laboratory tested. All Bronson products are tested in our state-of-the-art cGMP registered facility in New York.
  • Trusted Since 1960: The pioneers of Bronson Vitamins were a group of pharmacists who witnessed the benefits of vitamins and mineral supplementation...
Bestseller No. 12
Now Foods L-Theanine 200 Mg 60 Veg Caps Pack of 2
  • 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...
  • CLASSIFICATIONS/CERTIFICATIONS: Vegan, Kosher, Non-GMO
  • 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.
Bestseller No. 13
L-Theanine 200mg, 120 Capsules — Relaxation and Sleep Support — Soy Free, Gluten Free, Non-GMO...
  • Third Party Tested and Manufactured in the USA: Doublewood L Theanine capsules are third party tested and manufactured right here in the USA
  • Supports Relaxation: L Theanine may help supports relaxation without causing drowsiness; Perfect for those that need to remain calm while retaining a...
  • Non-GMO and Gluten Free: Double Wood's L-Theanine is Non-GMO and Gluten Free
  • Works Well with Magtein (Magnesium L-Threonate) and Apigenin: Take with Magnesium L-Threonate and Apigenin for best results
Bestseller No. 14
EZ Melts L-Theanine, 200 mg, Sublingual Vitamins, Vegan, Zero Sugar, Natural Cherry Flavor, 60 Fast...
  • L-Theanine supports healthy stress response
  • Promotes relaxation and a sense of calm
  • 60 fast melting tablets with "Sweet Cherry" flavor
  • MADE IN THE USA: Zero Sugar, Vegan, Gluten-Free, Non-GMO, Natural Flavors, Natural Sweeteners, Natural Colors
Bestseller No. 15
Country Life L-theanine, 200 mg, 60-Count
  • VEGAN L-THEANINE (AMINO ACID) – Derived from green tea leaves with no artificial fillers
  • PROMOTES CALM & RELAXATION –Helps reduce stress and gently soothes away tension
  • VITAMIN B6 – Formulated with B-vitamins for utilization and improved absorption of supplement nutrients
SaleBestseller No. 16
Source Naturals Serene Science L-Theanine 200mg - 60 Tablets
  • MAY SUPPORT FOCUSED RELAXATION. This formula contains 200mg of L-Theanine.
  • SUGGESTED USE. 1 tablet 1 to 2 times daily.
  • WELL MADE SUPPLEMENT. Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, preservatives, or artificial color, flavor...
  • TRUSTED FOR OVER 35 YEARS. Source Naturals was created in 1982 by CEO Ira Goldberg to support each individual's potential to enjoy optimal health.
  • MANUFACTURED IN THE USA. Our facility is located in Scotts Valley California.
Bestseller No. 17
Puritan's Pride L-Theanine, Nootropic 30 Servings (200mg Per Serving), 60 Capsules
  • Highest quality vitamins and supplements since 1977
  • Scientifically formulated
  • Supports a calm, relaxed mood*
  • Gluten & lactose free
  • 1 month supply
Bestseller No. 18
L-Theanine 200mg — 150 Count (V-Capsules) / 150 Servings: Manufactured in a cGMP-Registered...
  • INSTRUCTIONS - Take one capsule with or without 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; non-GMO, 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.
Bestseller No. 19
Solaray L-Theanine 200mg w/Green Tea Leaf 100mg | Relaxation, Stress, Mood & Focus Support w/Out...
  • Relaxation: Amino acid may help provide support for a healthy response to stress
  • Sleep: L-Theanine may also help support normal relaxation and rest but should not cause drowsiness
  • Mood & More: May help to support focus, improved mood & a healthy cardiovascular system
  • Trusted Brand: Manufactured in our own facility
Bestseller No. 20
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.

Having trouble finding a great l theanine 200 mg?

This problem is well understood by us because we have gone through the entire l theanine 200 mg research process ourselves, which is why we have put together a comprehensive list of the best l theanine 200 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 200 mg for 2023. See our ranking below!

How Do You Buy The Best L Theanine 200 Mg?

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We understand, because we’ve already gone through the whole process of researching l theanine 200 mg, which is why we have assembled a comprehensive list of the greatest l theanine 200 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 200 mg that you consider buying. Your questions might include the following:

  • Is it worth buying an l theanine 200 mg?
  • What benefits are there with buying an l theanine 200 mg?
  • What factors deserve consideration when shopping for an effective l theanine 200 mg?
  • Why is it crucial to invest in any l theanine 200 mg, much less the best one?
  • Which l theanine 200 mg are good in the current market?
  • Where can you find information like this about l theanine 200 mg?

We’re convinced that you likely have far more questions than just these regarding l theanine 200 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 200 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 200 mg. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an l theanine 200 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 200 mg currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of l theanine 200 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 200 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 200 mg.
  5. Customer Ratings: Number ratings grade l theanine 200 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 200 mg.
  7. Product Quality: You don’t always get what you pay for with an l theanine 200 mg, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an l theanine 200 mg is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining l theanine 200 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 200 mg is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: What do you need to know about L-theanine?

A: Effects on GABA. The calming effects are produced by increasing GABA levels (gamma-amino-butyric acid),an important inhibitory neurotransmitter in the brain. Caffeine and L-Theanine. … Supplements. … Hidden dangers. … L-Theanine content in tea. … Interaction with other substances. … Polyphenolic compounds. … The effect of L-Theanine on the body. …

Q: Where to buy L theanine?

A: L-Theanine can be obtained in a variety of forms today, but Suntheanine is the best. Consistent and immediate results are achieved by this method. Suntheanine may, however, have a higher price tag …

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.

Q: What is L theanine risks?

A: There are no real side effects L theanine has. Now, with real side effects I mean things like hypertension, damaging your liver, and other things that can be really bad for your health. However, L theanine is not something that I recommend you take every day in unlimited quantities.