10 Best l theanine supplements of 2025

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Best Choice

1

Pure Encapsulations

Pure Encapsulations L-Theanine - Amino Acid Supplement to Support Relaxation, Stress & Nervous System - 60 Capsules
9.9

Exceptional

Our Rating
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Value for Money

2

MaryRuth Organics

MaryRuth's L Theanine 200mg Liquid Drops | Mood Support for Adults & Kids | Focus Supplement | Natural Sleep Support | Vegan | Non-GMO | Gluten Free | 30 Servings

13% Off
9.7

Exceptional

Our Rating
3

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

Key Features
Promotes relaxation without drowsiness, natural ingredients, made in USA, GMP NSF Certified, Kosher, available in SUPER VALUE SIZE.

Ideal Use Cases
Perfect for those seeking a natural way to restore calm and achieve a relaxed state, especially beneficial for stress relief.

Customer Praise
Most reviews highlight its effectiveness in promoting a sense of calm and relaxation without the side effects typically associated with other remedies.
9.5

Excellent

Our Rating

9.9
Mobile App

9.9
simple to consume

9.7
worth the money
4

Sports Research
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
Main highlights

Key Features
Enhances relaxation, focus, and alertness with 200mg of L-Theanine, using patented Suntheanine for jitter-free energy. Non-GMO, gluten-free, and soy-free.

Ideal Use Cases
Perfect for replacing caffeine routines, improving meditation or study sessions, and supporting calm focus in high-stress scenarios without energy crashes.

Customer Praise
Most reviews highlight significant improvements in daily focus and stress management, appreciating the natural, jitter-free energy boost.
9.2

Excellent

Our Rating

9.7
simple to consume

9.7
quality of ingredients

9.5
Flavor
5

NOW Foods
NOW Foods Supplements, L-Theanine 200 mg with Inositol, Stress Management*, 120 Veg Capsules
Main highlights

Stress Management and Relaxation
L-Theanine 200 mg with Inositol promotes relaxation without drowsiness or negative side effects.

Ideal for Anxiety and Stress Relief
Best used for managing anxiety and stress, suitable for daily use.

Highly Praised Calming Effect
Customers commend its ability to calm anxiety and enhance focus.
9.0

Excellent

Our Rating

9.7
simple to consume

9.1
Flavor

9.1
worth the money
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6

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

14% Off
Main highlights

Key Features
200mg of L-Theanine per serving, 120 capsules per bottle, manufactured in a GMP compliant, FDA registered facility for quality assurance.

Ideal Use Cases
Perfect for stress reduction, promoting relaxation without drowsiness, and enhancing mental clarity and focus, especially in demanding situations.

Customer Reviews Summary
Most reviews highlight the effective stress relief and improved focus without side effects, appreciating the product`s consistency and purity.
8.9

Very Good

Our Rating

9.5
simple to consume

9.3
worth the money

9.1
Flavor
7

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

Fast-Acting Stress Relief
Nature Made L-Theanine tablets work within 30 minutes for quick relaxation without drowsiness.

Ideal for On-the-Go Stress Management
Perfect for adults needing fast stress relief, chew one tablet as needed.

Delicious Tropical Flavor
Customers love the tasty, tropical fruit flavor of these chewable tablets.
Key specs
- Gluten-Free:Yes
- Capsules:50 count
- Form:Chewable tablet
- Ingredients:L-Theanine, tropical fruit flavor
- Benefits:Stress support, relax mind
8.8

Very Good

Our Rating
8

Integrative Therapeutics

Integrative Therapeutics L-Theanine - L-Theanine to Support a Relaxed State* - Healthy Stress Response* - Vegan & Gluten-Free Amino Acid Supplement - 200 mg, 60 Capsules
8.5

Good

Our Rating
9

NUTRAHARMONY

L Theanine 400 mg | L-Theanine Stress Relief | Extra Strength Supplement | Made in USA | Relaxation, Sleep & Calm Support | For Men & Women | Plant Based, Non-GMO & Gluten-Free | 120 Vegan Capsules
8.4

Good

Our Rating
10

Horbäach
Horbäach L-Theanine | 400mg | 120 Capsules | Non-GMO & Gluten Free

14% Off
Main highlights

Key Features
High potency 400 mg L-Theanine for quick release. Expertly crafted for purity. Free of gluten, wheat, yeast, lactose, soy, and non-GMO.

Ideal Use Cases
Perfect for enhancing relaxation without drowsiness, improving concentration and focus, and supporting a calm, balanced mood.

Customer Reviews Highlight
Most praised for its effective stress reduction and relaxation benefits without sedative effects, improving overall well-being.
8.1

Good

Our Rating

9.7
simple to consume

9.3
worth the money

9.3
Flavor

10 Best l theanine supplements of 2025

1

Pure Encapsulations L-Theanine - Amino Acid Supplement to Support Relaxation, Stress & Nervous System - 60 Capsules

How do we rank?

How do we rank?

Analyzing top stores

2

MaryRuth's L Theanine 200mg Liquid Drops | Mood Support for Adults & Kids | Focus Supplement | Natural Sleep Support | Vegan | Non-GMO | Gluten Free | 30 Servings

3

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

9.9

9.9

9.7

4

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

9.7

9.7

9.5

5

NOW Foods Supplements, L-Theanine 200 mg with Inositol, Stress Management*, 120 Veg Capsules

9.7

9.1

9.1

6

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

9.5

9.3

9.1

7

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

8

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

9

L Theanine 400 mg | L-Theanine Stress Relief | Extra Strength Supplement | Made in USA | Relaxation, Sleep & Calm Support | For Men & Women | Plant Based, Non-GMO & Gluten-Free | 120 Vegan Capsules

10

Horbäach L-Theanine | 400mg | 120 Capsules | Non-GMO & Gluten Free

9.7

9.3

9.3

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