The Best l theanine 100 mg of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best l theanine 100 mg of 2022. Check our ranking below.

2,364 Reviews Scanned

SaleRank No. #1

NOW Foods 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*
HEALTHY VASCULAR FUNCTION*/WITH DECAF GREEN TEA: L-Theanine may also support healthy vascular function through this relaxing effect.* It is a unique amino acid found naturally in the tea plant (Camellia sinensis)
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 laboratory/testing methods (for stability, potency, and product formulation)
Packaged in the USA by a family owned and operated company since 1968

SaleRank No. #2

Jarrow Formulas® Regular Strength Theanine 100 mg, Dietary Supplement, 60 Capsules, 60 Day Supply

Theanine Supplement(1): One 60 count bottle of Jarrow Formulas Regular Strength Theanine 100 mg veggie capsules
Calmness Support: Each capsule contains 100 mg of L-Theanine, a neurologically active amino acid that supports relaxation when taking 2 capsules per day(1)
Better-For-You Capsules: This non-GMO, gelatin/gluten-free, vegetarian theanine supplement is free of artificial flavors, sweeteners, synthetic dyes, and common food allergens
Suggested Use: Adults, take one L-Theanine 100 mg capsule once a day with water or juice on an empty stomach, or as directed by your qualified healthcare professional
Disclaimer: (1)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

Rank No. #3

SOS L-Theanine, Brain Support Focus Supplement, 100mg, 120 Count

Promotes Relaxation: L-theanine may promote relaxation without drowsiness. Also may restore a sense of calm.
Helps Boost Cognitive Function: Regular consumption of L-theanine can help improve cognitive function, including improved memory, focus, and attention span.
Improves Mood: L-theanine can have a positive impact on mood, promoting feelings of calm and well-being.
Antioxidant Properties: L-theanine can help protect from oxidative stress, promoting overall health and longevity.
Formula - created with high-grade ingredients, free from fillers; making it an easy to take capsule.

Rank No. #4

Whole Foods Market, L-Theanine 100 MCG 60 CT

365 by Whole Foods Market products give you that dance-down-the-aisles feeling, virtual aisles too! Our huge range of choices with premium ingredients at prices you can get down with makes grocery shopping so much more than tossing the basics in your cart.
An Amazon brand

Rank No. #5

Life Extension L-Theanine, 100 mg, 60 Vegetarian Capsules — Supports a Calming & Mood Enhancing Effect, Amino Acid Derived From Tea - Gluten-Free, Non-GMO

Life Extension L-Theanine, amino acid theanine, calm, relaxation, mood, gluten-free, non-GMO, vegetarian, 100 mg, 60 capsules
Calming brainwave patterns – L-theanine helps modulate several different aspects of brain activity for mood support. This supplement promotes specific brainwave patterns similar to those associated with performing meditation or getting a massage.
Neurotransmitter production – The neurotransmitter gamma amino butyric acid (GABA) plays a role in influencing healthy levels of the feel-good neurotransmitters dopamine and serotonin. L-theanine helps encourage GABA production, to keep that feel-good feeling going.
Ingredients matter – We use only the finest raw ingredients with the purity and potency you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every one. 
Live your healthiest life – We believe the answers to a healthier life are within reach, and that scientific research is the key to getting us there. That’s why so many of our formulas feature specific ingredients and amounts based on scientific studies.

SaleRank No. #6

NOW Foods Supplements, L-Theanine 100 mg with Inositol and Taurine, Tension Management*, 90 Chewables

Promotes Relaxation
Healthy Vascular Function
With Inositol and Taurine

SaleRank No. #7

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

Rank No. #8

Healthy Origins L-Theanine 100 mg (AlphaWave, Supports Relaxation Without Drowsiness, Brain Support, Non-GMO, Gluten Free), 180 Veggie Caps

Calm Without the Crash – Healthy Origins L-Theanine supports healthy relaxation and a sense of calm—without causing drowsiness or mental fog.*
Stay Focused & Clear – Promotes mental clarity and focused attention, making it ideal for busy days, work, or study sessions.*
Naturally Sourced from Green Tea – Derived from the Camellia sinensis (tea) plant, L-Theanine is a naturally occurring amino acid known for its soothing effects.*
Encourages Alpha Brain Waves – Shown to stimulate alpha wave production in the brain, helping promote a relaxed yet alert state of mind.*
Daily Support for a Balanced Mood – Whether you're facing daily stress or need a calm edge, L-Theanine offers gentle, natural support for mood and mental performance.*

Rank No. #9

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

Rank No. #10

Now Foods Theanine 100mg, 90 CT

DOUBLE VALUE PACK! You are buying TWO of Now Foods L-Theanine, 90 caps L-Theanine is an amino acid naturally found in green tea that promotes relaxation without the drowsiness or negative side effects associated with other calming agents.
L-Theanine also supports healthy cardiovascular function through this relaxing effect as well as its antioxidant properties.
Now Foods L-Theanine, 90 caps

Last update on 2025-05-18 / Affiliate links / Images from Amazon Product Advertising API

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Specifications: How powerful they are can be measured.
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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: How much L theanine can you take?

A: The L-Theanine dosage that you use is a very important factor in deciding whether you may or may not feel any L-Theanine side effects. The recommended L-Theanine dosage is around 100-200 mg, once or twice daily. However, because L-Theanine is such a safe dietary supplement, many people use a higher dosage to experience stronger Theanine effects.

Q: Does L theanine contain caffeine?

A: Since they’re made using the younger leaves, white and green teas, including matcha, have more caffeine and L theanine. By dry weight, the theanine content of tea leaves ranges from 0.9-3.1. For a standard serving brewed with 2.5g of leaf, this equates to a to 25-60 mg dosage per cup.