Best L Theanine

Peter | 14-12-2025

You will find our hand-picked selection of Best L Theanine below. You have a wide variety of choices of brands such as Nature’s Trove,Nutricost,Nature Made,Sports Research available to you as a result of the fact that each one of them has a unique pricing, look, and feel. Continue reading for an in-depth analysis in our Best L Theanine buying guide!

Our experts tested a variety of Best L Theanine on the market. Right at the top of the list is Nature’s Trove Best L Theanine. Check out some more of our favorites below, and read some valuable insight from our experienced editors.

Editor's Choice
L-Theanine 200mg by Nature's Trove - 120 Vegetarian Capsules
L-Theanine 200mg by Nature's Trove - 120 Vegetarian Capsules
Premium Pick
Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free
Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free
Budget Pick
Nutricost L-Theanine 200mg, 240 Capsules - Double Strength
Nutricost L-Theanine 200mg, 240 Capsules - Double Strength

Top 10 Best L Theanine

We researched and compared the top products in the Best L Theanine category to provide you with these recommendations.

1. L-Theanine 200mg by Nature's Trove - 120 Vegetarian Capsules

L-Theanine 200mg by Nature's Trove - 120 Vegetarian Capsules
9.8

Nature's Trove

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  • 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

2. Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free

Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free
9.8

Nutricost

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  • 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

3. Nutricost L-Theanine 200mg, 240 Capsules - Double Strength

Nutricost L-Theanine 200mg, 240 Capsules - Double Strength
9.1

Nutricost

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  • 240 Capsules of 200mg L-Theanine Per Bottle
  • Double Strength
  • Easy To Take Capsules
  • Non-GMO and Gluten Free
  • Manufactured In a GMP Compliant, FDA Registered Facility

4. Nature Made Chewable L Theanine Supplement 200mg for Stress Relief, 50 Tablets, 50 Day Supply

Nature Made Chewable L Theanine Supplement 200mg for Stress Relief, 50 Tablets, 50 Day Supply
8.9

Nature Made

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  • Stress support supplement: contains one 50 count bottle of Nature Made L Theanine 200mg Chewable Tablets for a 50-day supply
  • Works within 30 minutes; L-Theanine helps relax the mind without drowsiness
  • Fast-acting stress relief (1) in chewable tablets that have no color added, no dairy, and are gluten free
  • 100% Drug Free and suitable for vegetarians
  • Delicious tropical fruit flavor; Adults, chew 1 tablet per day as needed
  • #1 Pharmacist Recommended Vitamin & Supplement Brand*; made in the USA with quality global ingredients
  • These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease

5. Sports Research Double Strength ‘Suntheanine’ L-Theanine with Organic Coconut Oil - Promotes

Sports Research Double Strength ‘Suntheanine’ L-Theanine with Organic Coconut Oil - Promotes
9.1

Sports Research

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  • ALERT & CALM: L-Theanine is an amino acid commonly found in green tea and is believed to help with relaxation. Suntheanine is patented, researched, and clinically proven to promote an alert state of relaxation and focus without any accompanying drowsiness. Get focused so you feel ready to take on the day!
  • 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 supplements that you are taking. Our L-Theanine 200mg softgel capsules are certified non-GMO and free of soy, gluten, artificial colors, Hexane, Stearates, and Titanium Dioxide.
  • Our products are made in cGMP compliant facilities in the United States, using only the best ingredients from domestic & international origins. For us, it's all about quality control - so you can have confidence in your dietary supplements.
  • 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 healthcare professional. Promoting an increase in Alpha brain waves and a decrease in Beta brain waves, you'll find your spark and get the boost you need with none of the sugar or unwelcome side effects from energy drinks or energy supplements.
  • THE SPORTS RESEARCH DIFFERENCE: Created in 1980, Sports Research is a privately-owned business born from a passion for fitness, wellness, and healing. Our goal is to help people live their best lives through real, research-backed ingredients created for every body inside and out. We're fully dedicated to sourcing the highest quality products from around the world, backed by third party testing. We all deserve the best in our quest for healthy living. Our mission is to give you just that.

6. Nature's Trove L-Theanine 200mg Super Value Size - 365 Vegetarian Capsules

Nature's Trove L-Theanine 200mg Super Value Size - 365 Vegetarian Capsules
8.7

Nature's Trove

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  • 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

7. Herbovella Liposomal L-Theanine Gummies 200mg with GABA, 5- HTP– Sugar Free L-Theanine Supplement

Herbovella Liposomal L-Theanine Gummies 200mg with GABA, 5- HTP– Sugar Free L-Theanine Supplement
8.3

Herbovella

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  • Promotes Deep Relaxation & Restful Zzz: L-theanine is a unique amino acid that occurs naturally in the tea plant and processed for relaxing effects. Our plant-powered l-theanine gummies are designed to help you unwind at night and support your body's natural wake and Zzz cycle, and wake up feeling refreshed and rejuvenated.
  • Powerful Calming Blend with L-Theanine, GABA & 5-HTP: Each serving of our L-theanine calm gummies delivers 200mg of L-Theanine to ease tension, 200mg of GABA (Gamma-Aminobutyric Acid) to calm the mind, and 100mg of 5-HTP to support serotonin production for a positive mood and healthy Zzz-wake cycle. Consistent use helps maintain healthy life style and promotes long-term relaxation.
  • Advanced Liposomal Absorption Technology: Our unique liposomal-inspired delivery system is designed to enhance the bioavailability and effectiveness of L-theanine. This means your body may utilize more of the active compounds compared to standard L-theanine gummies, ensuring you get the full benefits of our powerful formula.
  • Delicious Vegan Gummies with Natural Mixed Berry Flavor: Enjoy the refreshing taste of mixed berry combined with green tea. Our Chewable L-Theanine Supplement offer a delightful way to support your wellness without compromising on taste. Their pleasant texture ensures theyre not too soft or mushyjust delicious!.Each bottle contains 60 delicious L-Theanine gummies, providing a full 30-day supply.
  • Clean Igredients, Superior Quality You Can Trust: Our L-theanine calm gummies are non-GMO, gluten-free, soy-free, and dairy-free. They contain no artificial colors or flavors and are sweetened naturally with stevia and prebiotic fiber. Our chewable L-Theanine supplement is manufactured in a cGMP-certified facility and undergoes lab testing for purity.

8. MaryRuth's L Theanine 200mg Liquid Drops | L-Theanine + Organic Glycerin | Stress Relief for Adults

MaryRuth's L Theanine 200mg Liquid Drops | L-Theanine + Organic Glycerin | Stress Relief for Adults
7.9

Maryruth Organics

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  • L-Theanine Liquid Drops: Support stress levels, cognitive function, sleep and more with these delicious, lemon-lime flavored liquid drops. With L-Theanine in easy-to-take liquid form, you can simply take it by mouth, add to a glass of water, your favorite morning juice, or a smoothie!
  • Multiple Benefits: L-Theanine is an amino acid found primarily in green and black tea and some mushrooms. It promotes relaxation and may ease occasional anxiety and stress while supporting memory and thinking skills (cognitive function).
  • Vegan Formula: Per Serving (60 Drops): 200 mg L-Theanine. Other Ingredients: Purified Water, Organic Glycerin, Citric Acid, Natural Flavor, Organic Stevia Leaf Extract, and Potassium Sorbate. Formulated for Adults and Kids.
  • Easy-to-Take-Drops: Shake well before each use. Once daily, take directly by mouth. Avoid direct dropper contact to mouth to prevent product contamination. Use the following to assess dosage or dose as recommended by a physician or healthcare professional: 4-8 Years: Up to 30 drops (1 mL)/day, 9-13 Years: Up to 60 drops (2 mL)/day, 14+ Years: Up to 60 drops (2 mL)/day, Pregnant/Lactating: Consult with a physician or healthcare professional.
  • For Most Lifestyles: MaryRuth L Theanine liquid drops are Non-GMO, Vegan, Made in a GMP (Good Manufacturing Practice) Facility Dairy Free, Nut Free, Soy Free, and Sugar Free. Each bottle comes with 30 servings.

9. Jarrow Formulas, Theanine Veggie Capsules, 200 mg, 60 Count

Jarrow Formulas, Theanine Veggie Capsules, 200 mg, 60 Count
7.7

Jarrow Formulas

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  • Neurologically Active Amino Acid - Theanine is a unique amino acid found almost exclusively in green tea that exerts beneficial effects on brain metabolism.
  • 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
  • Relaxation & Pleasure - Theanine supports relaxation without causing drowsiness, as measured by increased generation of alpha-waves. Theanine may improve sensations of pleasure by affecting dopamine and serotonin neurotransmitters in the brain.
  • Veggie Caps - Take one veggie capsule per day with water or juice on an empty stomach or as directed by your qualified healthcare professional. This formula is suitable for vegans and vegetarians.
  • Superior Nutrition & Formulation - The goal of Jarrow Formulas is to promote optimal health with high-quality, effective, affordable, and superior formulation of dietary supplements. Our customers can be assured of purity, value, and potency.

10. 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 delivery
  • 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.
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.

Peter

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