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L-Theanine 100 mg

The Vitamin Shoppe
4.8
★ ★ ★ ★ ★
(130 ratings)
Theanine 100 mg
Product Image
Score92

A simple and gentle 100mg theanine supplement for baseline relaxation and focus.

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

Score 92

A simple and gentle 100mg theanine supplement for baseline relaxation and focus.

How scoring works

Also available as

2 options
200.00mg • 120 Capsule(s) servings Theanine 200 mg • 120 Capsule(s) • 120 servings $44.99 ($0.37 per serving) 200.00mg • 60 Capsule(s) servings Theanine 200 mg • 60 Capsule(s) • 60 servings
$19.99($0.33 per serving)
iHerb
$ 19.99
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Analysis

Each capsule provides 100mg of L-theanine, which is a common dose for supporting general relaxation and focus. It is simple and direct, without any other active ingredients or fancy branded forms.

This product is ideal for daytime use because the dose is high enough to help with calm but low enough that it typically won't cause sleepiness. It is a straightforward tool for daily stress maintenance.

Pros

  • Simple single-ingredient formula
  • Gentle introductory dosage
  • Good for daytime relaxation
  • Easy to take capsule

Cons

  • Not a branded form of theanine
  • Lower dose per capsule
  • May require multiple doses for some

Warnings

  • Check for sensitivity to amino acids
  • Monitor your mood during use
  • Keep out of direct sunlight

Nutrient quality

89 Highest impact

Standard dosing of L-Theanine provides reliable support for the alpha brain wave pathway associated with alert calmness. Lack of high-purity branded forms slightly limits the quality compared to premium alternatives.

Ingredient transparency

98 Highest impact

Ingredient amounts and serving suggestions appear straightforward and easy to navigate on the label. Naming conventions are specific and exclude ambiguous terminology.

Customer satisfaction

91 Highest impact

User feedback remains consistently positive across a high volume of reviews. No recurring complaints regarding efficacy or side effects are evident in the aggregate data.

Value for money

86 Highest impact

Pricing per serving aligns well with industry standards for single-ingredient amino acids. Minimalist design avoids the cost inflation often seen with complex botanical blends.

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Goals

Productivity Boost
Impact
Highest effect
A Goal FitA Strength of SupportC- CoverageA+ Formula Quality

L-Theanine is provided in a 100mg capsule to support relaxed wakefulness and focus. This amino acid is well-aligned with goals of maintaining clarity during demanding periods.

The 100mg dose meets the standard clinical threshold for promoting alert relaxation. Using the pure L-isomer ensures consistent biological activity for neurological support.

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

Offers 100 mg of L-Theanine per capsule to support a state of relaxed focus and mental clarity without causing drowsiness. This amino acid is well-aligned for reducing acute stress and helping to maintain calm attention during demanding tasks.

Providing a clean, single-ingredient formula ensures a targeted nutritional impact without potential interactions from other actives. It serves as a foundational dose for individuals beginning cognitive support protocols or needing gentle daytime stress relief.

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

L-theanine is provided at 100mg per capsule to support a state of calm alertness and promote mental focus. This amino acid is well-regarded for its role in reducing stress-induced cognitive fatigue and promoting alpha brain wave activity.

Alignment with the cognitive support goal is strong for those seeking to achieve clarity and sustained focus. The formula provides a standard, clinically relevant dose that is easy to integrate into a targeted nootropic stack.

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

L-Theanine in a 100mg dose supports the transition to sleep by promoting mental relaxation.

This single-ingredient approach appears well aligned with individuals seeking gentle, targeted support for evening calm.

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

L-Theanine supports a state of calm focus by promoting alpha brain wave activity and modulating neurotransmitters. This 100mg dose provides a foundational level of support for mental clarity and stress management.

Improved concentration and reduced mental tension may contribute to more productive focus during demanding tasks. It is a clean and straightforward supplement for those seeking a single-ingredient nootropic.

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

This single-ingredient supplement provides 100 mg of L-Theanine to support relaxation and a calm mental state. This amino acid is pointed out for its ability to modulate inhibitory neurotransmitters and promote healthy brain wave activity.

The simple capsule format ensures a clean and reliable delivery of the active isomer for daily psychological support. It is well-suited for individuals seeking foundational support for stress management without causing drowsiness.

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

This single-ingredient supplement provides 100mg of L-Theanine to promote a state of relaxed focus without causing drowsiness. L-Theanine is a well-regarded amino acid for reducing acute psychological stress by modulating brain wave activity.

While 100mg is a standard maintenance dose, it provides a gentle introductory level of support for nervous tension. This straightforward capsule appears well aligned for users seeking clean, non-sedating relaxation during busy or stressful days.

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Ingredients

IngredientAmount per serving
L-Theanine
100 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free Vegetarian
Report overview
Theanine · 100 mg OverallScore88
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
This single-ingredient supplement provides a standard 100mg dose of L-Theanine in a simple capsule. It is an ideal baseline product for those seeking reliable relaxation support without any extra additives.
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Double Strength L-Theanine 200 mg

NOW
4.7
★★★★★
(42894 ratings)
The 200mg dose and addition of inositol provide superior cognitive support for a very similar overall cost. It represents a significant upgrade in formula complexity and potency.
Other sellers (5)
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L-Theanine 200 mg Double Strength

Swanson
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(1058 ratings)
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Other sellers (2)
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L-Theanine 150 mg

Doctor's Best
4.6
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(8423 ratings)
Offers a higher 150mg dose in a bulk 90-count bottle, providing long-term value and high transparency. It is an excellent choice for maintaining consistent focus at a reduced cost-per-capsule.
Other sellers (4)
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L-Theanine 100 mg

California Gold Nutrition
4.7
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(24551 ratings)
Utilizes the branded AlphaWave ingredient, ensuring higher purity and standardized performance compared to generic theanine. This premium source is better for achieving consistent cognitive clarity.
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Suntheanine L-Theanine 125 mg

Natural Factors Stress-Relax
4.7
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NutriCology
4.6
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Other sellers (3)
Report alternatives