The Best Suntheanine L-Theanine of 2023 – Reviewed and Top Rated

2,401 (random number) Reviews Scanned

Rank No. #1

Doctor's Best L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free, Vegan, 150 mg (DRB-00197), 90 Count

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
SUPPORTS BRAIN HEALTH - L-Theanine is a powerful Amino Acid that enhances cognitive performance and alertness. L-Theanine may help improve quality of sleep, learning performance, concentration and help support the immune system. L-Theanine may also help reduce the negative effects of caffeine
SUNTHEANINE - L-theanine is an agent that is used for nervousness and tension by supporting mental tranquility. Suntheanine may normalize the body’s stress response and condition the body to handle stressful situations better

SaleRank No. #2

Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus, Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil, Non-GMO & Gluten Free - 200mg, 60 Count

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*
PREMIUM INGREDIENTS: We hold all of our supplements to a higher standard. Rest assured that your L-Theanine is crafted using 100% organic coconut oil and an entirely non-GMO verified, gluten-free and soy-free product. Manufactured in the USA in cGMP-compliant facilities
THE SPORTS RESEARCH DIFFERENCE: Founded in Southern California in 1980, Sports Research is a family-owned business born from a passion for fitness and wellness. Our goal is to embrace the sport of life through research-backed products created for every body—inside and out

SaleRank No. #3

Stress-Relax Chewable Suntheanine L-Theanine 100 mg by Natural Factors, Non-Drowsy Stress Support for Mental Calmness and Relaxation, Tropical Fruit Flavor, 60 Tablets

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 physical and mental relaxation
Calm and focused: Promotes calmness and helps stimulate an overall sense of relaxation; Perfect for working through daytime stress and relaxing at night
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 and potency

Rank No. #4

Natural Factors Stress-Relax Suntheanine L-Theanine 125 mg, Non-Drowsy Stress Support for Mental Calmness and Relaxation, 60 Capsules

Get the most out of curcumin with our CurcuminRich Double Strength Theracurmin; Made using advanced technology that reduces cucrumin's particle size for maximum bioavailability and easy absorption
Delivers a powerful antioxidant boost for improved overall wellness
Aids heart function and helps keep your joints and muscles healthy and comfortable
Take 1 capsule up to 2 times daily; Our small-sized capsules are easy to swallow and cause no digestive discomfort
Independently tested and third-party certified for GMOs and over 800 contaminants using advanced technology such as mass spectrometry to ensure purity and potency

Rank No. #5

Sports Research Double Strength L-Theanine 200mg with Organic Coconut Oil | Suntheanine Supplement for Focus, Relaxation & Alertness | Non-Drowsy, Non-GMO & Gluten Free -120 Softgels

FOCUS + MOOD SUPPORT: Sports Research L-Theanine softgles help increase Alpha brain wave activity, the same waves created when practicing meditation or mindfulness.* Alpha waves indicate a relaxed, focused, and alert mind.*
PATENTED INGREDIENT: Made with Suntheanine, a patented form of L-theanine that mimics the natural process in green tea leaves, resulting in a 100% pure L-isomer-theanine.* Suntheanine is protected by over 40 U.S. patents and is GRAS (Generally Recognized as Safe) affirmed.
L-THEANINE 200MG: Each liquid softgel provides 200mg of Suntheanine L-theanine complexed with Extra Virgin Organic Coconut Oil. Best paired with Magnesium L-Threonate for better sleep and relaxation.*
QUALITY TESTED: We hold all of our supplements to a higher standard. Our L-theanine softgels are non-GMO verified and free of gluten, silicon dioxide, and magnesium stearate. Manufactured in the USA in a cGMP-compliant facility and 3rd party tested for quality.
THE SPORTS RESEARCH DIFFERENCE: Founded in Southern California in 1980, Sports Research is a family-owned business born from a passion for fitness and wellness. Our goal is to embrace the sport of life through research-backed products created for every body—inside and out.

Rank No. #6

Swanson Amino Acid Double Potency Suntheanine L-Theanine 200 Milligrams 60 Veg Capsules

Double potency L-theanine supplement
Delivers 200 mg per capsule
Promotes balanced wellbeing
OUR QUALITY COMMITMENT: For nearly 50 years, Swanson has delivered science-backed health products worldwide. Each wellness supplement is made in our GMP certified facilities, and our purity and potency testing includes independent third-party labs.
MONEY BACK GUARANTEE: At Swanson, we guarantee that every health product is made from the purest, freshest nutrients. If you aren't satisfied with any product(s) purchased within the last 30 days, return the unused portion to us for a full refund.

Rank No. #7

Country Life L-Theanine, 200mg Suntheanine L-Theanine, 60 Vegan Capsules, Certified Gluten Free, Certified Vegan, Certified Halal

200mg Suntheanine - a prominent, clinically-studied form of L-theanine
Promotes calm & relaxation without drowsiness - Helps reduce stress and gently soothes away tension - when taken as directed
Vitamin B6 – Formulated with B-vitamins for utilization and improved absorption of supplement nutrients
Free of - artificial colors, flavors, preservatives, sweeteners, sugar and more
Certified - Certified Gluten Free by GFCO, Certified Vegan by AVA,, Certified Halal by IFANCA

Rank No. #8

BESTVITE L-Theanine 200mg with Patented and Clinically Studied Suntheanine (60 Vegetarian Capsules) - No Stearates - Vegan - Non GMO - Gluten Free

CLINICALLY STUDIED PATENTED INGREDIENT: Suntheanine is a high-purity, L-isomer form of the amino acid theanine, produced via a patented fermentation process that mimics the natural process in green tea leaves.
FOCUS AND RELAXATION SUPPORT: Suntheanine can help support mental alertness and focus. It can also support relaxation and stress without causing drowsiness.*
PURE FORMULA: Bestvite Suntheanine contains no stearates, is non-GMO, gluten-free, vegan, and comes in an additive-free capsule. Each capsule contains 200 mg of Suntheanine.
BESTVITE GUARANTEE: All Bestvite products are manufactured in the USA according to GMP. The raw materials and all batches of the finished Suntheanine product are tested by a 3rd party laboratory for purity and potency.
NSF GMP CERTIFIED: Bestvite’s facility is NSF/ANSI 455-2 Dietary Supplements Good Manufacturing Practice (GMP) certified. Earning GMP certification from NSF verifies that a manufacturing facility has the proper methods, equipment, facilities, and controls in place to produce dietary supplement products.

Rank 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 may promote relaxation without drowsiness.*
Neurotransmitter Support - L-theanine has been studied for its ability to reduce glutamate uptake and support the body's serotonin, dopamine, and norepinephrine excretion.*
Hypoallergenic* - Keeping sensitives in mind, this product is free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, soybeans, and yeast. Contains no artificial colors, flavors, or preservatives.
Practitioner Trusted - Trusted by healthcare practitioners since 1969, Klaire Labs products are developed closely with physicians and are intended to be used as directed by a healthcare practitioner.

SaleRank No. #10

Vitacost Synergy L-Theanine from Suntheanine® -- 100 mg - 120 Capsules

Rank No. #11

Metabolic Maintenance L Theanine - 200mg L-Theanine Supplement to Support Healthy Focus & Relaxation - L-Theanine Suntheanine Amino Acid for Supporting Stress Response (120 Capsules)

Promotes Relaxation - L-Theanine is a non-protein amino acid found naturally in the green tea plant. Due to L - Theanine's role as an effective GABA precursor, l theanine supplement use may support feelings of relaxation.*
L-Theanine 200mg Immune Support - Pure L-Theanine (suntheanine l-theanine) is able to cross the blood-brain barrier. It may help support already healthy dopamine levels and the immune system.*
Purity and Quality - Our amino acid supplement is free of fillers, binders, preservatives, artificial colors + flavors. Our l theanine 200mg supplements are free of gluten, egg, nuts, and magnesium stearate. Bottles are BPA-free recycled amber.
The Right Dose For You - When it comes to focus and mood supplement needs, dosing desires vary. We offer l- theanine 200mg capsules and a 100mg version. This is the 200 mg dose.*
Physician's Choice - The health care professional's choice for l-theanine supplements since 1984. We use current research, clinical studies, and third-party testing at all stages of development. Mood support you can trust, at an exceptional value.

Rank No. #12

XYMOGEN L-Theanine - Patented Suntheanine L theanine 400mg Per Serving - Amino Acid Supplement to Support Calm + Relaxation Without Drowsiness, Liver Health (60 Capsules)

L theanine has been found to reduce stress and support occasional stress management by promoting calm and relaxation without drowsiness, easing nervousness due to overwork and fatigue, and offering nervous system support by helping to reduce nervous irritability.*
A naturally occurring, unique amino acid found in green tea leaves. XYMOGEN L theanine supplement capsules contain L-theanine 400mg per serving.*
The L-Theanine (as suntheanine l-theanine) in this amino acids supplement is protected by several patents based on its positive effects.*
May offer liver support. Human studies suggest that it may also be useful in supporting concentration and in reducing negative side effects from caffeine.*
Formulated to exclude: Wheat, gluten, corn, yeast, soy, animal or dairy products, fish, shellfish, peanuts, tree nuts, egg, ingredients derived from GMOs or artificial preservatives. XYMOGEN supplements for relaxation support and amino acid nutritional supplements are practitioner trusted.*

Rank No. #13

Stress-Relax Tranquil Sleep by Natural Factors, Sleep Aid with Suntheanine L-Theanine, 5-HTP, Melatonin, 90 Softgels

A good night' s rest: Our advanced, non-habit-forming blend of natural ingredients helps prepare you for a refreshing and rejuvenating sleep without morning grogginess
Sleep soundly, regularly: Calms the nerves and encourages a deeper, uninterrupted rest; Helps support a healthy sleep cycle to reduce occasional sleeplessness
A natural sleep aid: Contains Suntheanine L-Theanine (200 mg), 5-HTP (30 mg) and melatonin (3 mg) to support every stage of slumber
Two softgels: Taken 30-45 minutes before bedtime; Non-GMO, non-habit-forming and free of gluten and soy
Third-party certified: Independently tested for GMOs and over 700 contaminants using advanced technology such as mass spectrometry to ensure purity and potency

Rank No. #14

Natural Factors, ( 2 Pack Stress-Relax, Suntheanine, L-Theanine, 125 mg, 60 Vegetarian Capsules

Rank No. #15

REVIVE Suntheanine - L-theanine - Supports Fatigue & Brain Function (60 Vegetarian Capsules)

Rank No. #16

Natural Factors, Stress-Relax, (2 Pack) Suntheanine, L-Theanine, 100 mg, 60 Chewable Tablets

Rank No. #17

DAVINCI Labs L-Theanine - Brain Function Supplement - Helps Support Relaxation, Focus, Calm Feelings & More with Suntheanine L-Theanine* - 120 Vegetarian Capsules

Key Relaxation Ingredient: Our calm supplement contains L-Theanine, an amino acid known for supporting relaxation without making you feel drowsy*
Focus Supplement: This calm supplement comes with 120 servings, with each serving providing a potent 200mg dosage to help manage your everday stress levels effectively*
High-Quality Stress Supplement: Not only does it help with everyday stress levels, but it also supports a restful state, helping to maintain your sleep quality for a more refreshed morning*
Superior Brain Function Supplement: L-Theanine is also useful as it helps to support focus and concentration, making it a valuable addition to your daily routine*
About DaVinci: We have been a leader in nutritional research, product development and innovation with our emphasis on quality and research

SaleRank No. #18

NOW Foods 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*
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
GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation)
Packaged in the USA by a family owned and operated company since 1968

Rank No. #19

NutraChamps L-Theanine 200mg Capsules | Double-Strength L-Theanine Liquid with Vitamin D3, Organic Coconut Oil | Supports Mood, Focus, Stress Relief | L-Theanine for Kids & Adults | 60 Vegan Capsules

Relaxation & Focus - L-Theanine promotes relaxation without drowsiness. Great for helping eliminate daily stresses or unwinding after a long day, this nutrient has been clinically shown to relax the body while also enhancing focus & clarity of mind.
Fast-Acting Vegan Liquid Capsule - Our L-Theanine is made with organic virgin coconut oil for maximum absorption - and is the world's first vegan liquid cap with zero animal gelatin! Because when you need a calm and clear mind, you need it fast.
Enhanced Benefits with Vitamin D3 - Studies show that D3, “the sunshine vitamin”, can improve mood. Together with L-Theanine, you have the perfect duo to be healthy & happy, as they work in harmony to reduce stress while improving positivity & sleep.
The Nutrient Found in Green Tea - Since ancient times, it has been said that drinking green tea soothes stress and helps the body relax. Clinical studies show that the amino acid L Theanine found in green tea leaves is responsible for these benefits.
Double-Strength 200mg per Capsule - Vegan | Non-GMO | Gluten-Free | Soy-Free | Made with Organic Ingredients | Lab-Tested & Verified | Made in USA | No Artificial Fillers or Coloring

Rank No. #20

Integrative Therapeutics L-Theanine - L-Theanine to Support a Relaxed State* - Healthy Stress Response* - Vegan & Gluten-Free Amino Acid Supplement - 200 mg, 60 Capsules

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*
Relaxation Supplement for Different Diets*: This l-theanine supplement is vegan, soy free and dairy free; this supplement doesn't contain wheat, corn, artificial colors, or flavors
For over 35 years, patients and clinicians have trusted Integrative Therapeutics for our dedication to quality, potency, and accuracy; transparency around our sourcing and manufacturing processes is part of our quality promise to you

Last update on 2023-12-22 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

How Do You Buy The Best Suntheanine L-Theanine?

Do you get stressed out thinking about shopping for a great Suntheanine L-Theanine? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching Suntheanine L-Theanine, which is why we have assembled a comprehensive list of the greatest Suntheanine L-Theanine available in the current market. We’ve also come up with a list of questions that you probably have yourself.

We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Suntheanine L-Theanine that you consider buying. Your questions might include the following:

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

We’re convinced that you likely have far more questions than just these regarding Suntheanine L-Theanine, 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 Suntheanine L-Theanine, 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 Suntheanine L-Theanine. Make sure that you are only using trustworthy and credible websites and sources.

We provide an Suntheanine L-Theanine 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 Suntheanine L-Theanine 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:

Brand Value: Every brand of Suntheanine L-Theanine 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.
Features: What bells and whistles matter for an Suntheanine L-Theanine?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your Suntheanine L-Theanine.
Customer Ratings: Number ratings grade Suntheanine L-Theanine objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Suntheanine L-Theanine.
Product Quality: You don’t always get what you pay for with an Suntheanine L-Theanine, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an Suntheanine L-Theanine is should be an indication of how long it will work out for you.

We always remember that maintaining Suntheanine L-Theanine 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 Suntheanine L-Theanine is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

The Best Suntheanine L-Theanine of 2023 – Reviewed and Top Rated

How Do You Buy The Best Suntheanine L-Theanine?

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