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Theanine 100 mg

Jarrow Formulas
4.6
★ ★ ★ ★ ★
(6464 ratings)
Theanine 100 mg
Product Image
Score95

A clean, vegetarian-friendly 100 mg theanine supplement for gentle stress support and mental focus.

How scoring works
Quantity:60 Veggie Cap(s) • (60 servings)
Goals:
Sleep Support
Cognitive Support
Stress Relief
Mental Focus
Brain Health
Mood Support
Productivity Boost

Score 95

A clean, vegetarian-friendly 100 mg theanine supplement for gentle stress support and mental focus.

How scoring works

Also available as

1 option
200.00mg • 60 Veggie Cap(s) servings Theanine 200 mg • 60 Veggie Cap(s) • 60 servings $20.99 ($0.34 per serving)
$10.00($0.16 per serving)
Pure Formulas
$ 11.99
Vitacost
$ 15.17
Vitacost
$ 15.17
Daily Vita
$ 11.99
Amazon
$ 11.99
iHerb
$ 15.59
Daily Vita
$ 10.00
Report prices

Analysis

Jarrow’s version of L-theanine is simple and effective, providing the standard dose found in many clinical assessments for focus and calm. It supports the induction of alpha brain waves, which helps you stay alert but relaxed during stressful tasks.

The use of vegetarian capsules makes it suitable for almost any dietary preference. It is a no-frills, high-quality tool for your daily mental composure.

Pros

  • Pure L-isomer for brain activity
  • Gentle, standard maintenance dose
  • Clean veggie capsule format
  • Excellent price-to-quality ratio

Cons

  • May require multiple doses for high stress
  • Very basic formulation

Warnings

  • Safe for daily use
  • Avoid taking with heavy stimulants if sensitive

Nutrient quality

90 Highest impact

Dosing is aligned with clinical standards for promoting relaxation without inducing drowsiness. Biological activity is ensured through the use of the L-isomer of the amino acid.

Ingredient transparency

99 Highest impact

Labeling is precise regarding active amounts and the absence of common allergens. Ingredient naming is simple and lacks marketing jargon, promoting clear understanding.

Customer satisfaction

95 Highest impact

Very high review counts and strong average ratings demonstrate long-term consumer satisfaction. Consistency in results is a frequent theme in the extensive feedback history.

Value for money

97 Highest impact

Excellent price per serving makes this one of the most cost-effective options in the theanine category. High value is derived from the pure formula and reputable brand manufacturing standards.

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Goals

Sleep Support
Impact
Highest effect
A Goal FitA Strength of SupportB- CoverageA+ Formula Quality

L-theanine is the sole active ingredient, provided in a 100 mg dose to support mental relaxation and stress resilience. This formulation appears well aligned with those seeking gentle calming effects without heavy sedation.

A standard 100 mg dose matches clinical targets for promoting alpha brain wave activity for better rest. The minimalist design focuses on a single pathway for mental calm without the dilution of other ingredients.

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Cognitive Support
Impact
Highest effect
A+ Goal FitA Strength of SupportC- CoverageA+ Formula Quality

L-Theanine 100 mg provides a foundational dose of this amino acid that may help promote relaxation without drowsiness. It is known to support alpha brain wave activity, which is associated with a state of calm focus.

The simple formulation uses the biologically active L-isomer to ensure efficacy. This product is well aligned for those seeking to mitigate the jitters of caffeine or support a relaxed mental state.

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Stress Relief
Impact
Highest effect
A+ Goal FitB+ Strength of SupportC- CoverageA+ Formula Quality

L-Theanine is provided at a foundational dose to support a state of relaxed alertness and neurological calm. As an amino acid, L-Theanine assist in promoting alpha brain wave activity, which is associated with mental focus and reduced psychological stress.

The 100mg dose per capsule offers a gentle and flexible approach to maintaining a calm state during the day. This simple and focused formulation is ideal for individuals seeking specific neurotransmitter support without extra additives or sedation.

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Mental Focus
Impact
Highest effect
A Goal FitB+ Strength of SupportC CoverageA+ Formula Quality

L-Theanine is an amino acid that promotes a state of relaxed alertness by modulating alpha brain wave activity. This appears well aligned with the need for steady mental focus without the jitters often caused by stimulants.

The 100mg dose is suitable for mild stress reduction and cognitive clarity during daily activities. The use of the specific L-isomer ensures that the supplement provides the intended neurological benefits.

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Brain Health
Impact
Highest effect
A Goal FitB Strength of SupportC CoverageA+ Formula Quality

L-Theanine at 100mg supports brain health by promoting mental relaxation and alpha brain wave activity. This amino acid appears well aligned with goals for focused alertness without the jitters associated with stimulants.

Utilization of the active L-isomer ensures high biological efficacy for modulating neurotransmitters like GABA and dopamine. Veggie capsules provide a clean and straightforward delivery of a standard maintenance dose.

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Mood Support
Impact
Highest effect
A- Goal FitB+ Strength of SupportC CoverageA+ Formula Quality

L-Theanine supports a relaxed but alert state of mind by modulating alpha brain wave activity. This amino acid appears well aligned for individuals seeking mild stress resilience without significant sedation.

The single-ingredient focus allows for a clean delivery of the active isomer known to influence neurological pathways. While the dosage is moderate, it provides a reliable foundation for supporting a stable and calm mood.

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Productivity Boost
Impact
Highest effect
A Goal FitB+ Strength of SupportD+ CoverageA+ Formula Quality

L-Theanine supports a state of calm alertness, which may contribute to better concentration and reduced mental fatigue. This 100mg serving provides a foundational dose for daily focus and stress management.

Using the specific L-isomer ensures that the amino acid can effectively cross the blood-brain barrier. It is a clean and reliable option for those looking to maintain clarity without sedation.

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Ingredients

IngredientAmount per serving
L-Theanine
100 mg
Gluten Free Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
Theanine · 100 mg OverallScore88
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
This single-ingredient supplement provides a clean and simple dose of L-Theanine to support relaxation. It is a reliable choice for those looking to add a specific amino acid to their daily routine without extra fillers.
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L-Theanine 150 mg

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