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L-Theanine 100 mg

California Gold Nutrition
4.7
★ ★ ★ ★ ★
(23388 ratings)
Theanine 100 mg
Product Image
Score95

An affordable and pure 100 mg theanine supplement for gentle stress support and mental focus.

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

Score 95

An affordable and pure 100 mg theanine supplement for gentle stress support and mental focus.

How scoring works

Also available as

1 option
200.00mg • 60 Capsule(s) servings Theanine 200 mg • 60 Capsule(s) • 60 servings $10.06 ($0.16 per serving)
$9.43($0.15 per serving)
Amazon
$ 10.84
iHerb
$ 8.02
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Analysis

California Gold Nutrition provides a very pure L-theanine in a simple veggie capsule format. The 100 mg dose is a gentle way to help support a stable mood and quiet the mind during a typical busy day.

It is exceptionally affordable, making it easy to incorporate into a long-term daily routine. This product is a reliable staple for those who prefer single-ingredient simplicity in their supplement stack.

Pros

  • Excellent price per serving
  • Clean veggie capsule format
  • Pure L-isomer for effectiveness
  • Supports relaxation without drowsiness

Cons

  • Basic single-ingredient formula
  • May require several capsules for deep stress

Warnings

  • Safe for long-term daily use
  • Standard theanine precautions apply

Nutrient quality

90 Highest impact

Active ingredients meet maintenance requirements for supporting focus and managing acute stress responses. Simple encapsulation avoids the use of questionable additives or excessive fillers.

Ingredient transparency

99 Highest impact

Clear disclosure of all ingredients and dosages allows for easy integration into existing nutritional protocols. Serving sizes and usage guidelines are unambiguous.

Customer satisfaction

95 Highest impact

Massive review volume with a high average score highlights the broad success of this formulation. Customer loyalty appears strong due to the reliability and purity of the product.

Value for money

98 Highest impact

Category-leading price point provides significant value for budget-conscious consumers seeking quality support. Efficiency is maximized by focusing on a single, well-researched active ingredient.

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Goals

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

L-Theanine at 100 mg per serving.

This simple formula supports a calm and relaxed state by modulating brain wave activity.

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

This selection provides a 100mg dose of L-Theanine, an amino acid recognized for its ability to promote relaxation and calm focus. L-Theanine supports the generation of alpha brain waves.

This single-ingredient capsule offers high precision for those seeking to manage daytime stress or improve focus during mental tasks. It appears well aligned for individuals wanting a simple and targeted cognitive support tool.

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Sleep Support
Impact
Highest effect
B+ Goal FitB+ Strength of SupportB- CoverageA+ Formula Quality

L-Theanine is the sole active ingredient, provided to support a calm state of mind.

Supporting mental relaxation may contribute to faster sleep onset without the grogginess associated with some sedatives.

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

This single-ingredient supplement provides a standardized 100 mg dose of L-Theanine, which may contribute to a state of calm focus and relaxation. By utilizing the L-isomer, the formula ensures the bioactivity required to promote alpha brain wave activity effectively.

The 100 mg dose provides effective baseline support for daily focus and maintaining concentration during stressful periods. The simple capsule format provides a focused and evidence-based approach for those seeking a non-jittery way to enhance mental clarity.

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

L-Theanine is a calming amino acid that supports the induction of alpha brain waves to promote a state of relaxed alertness. Providing 100 mg per serving offers functional support for managing daily psychological stress without causing excessive sedation.

Utilization of the biologically active L-isomer ensures optimal efficacy for the intended neurological benefits. This single-ingredient approach appears well aligned for individuals seeking clean and reliable support for mental calm and focus.

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Productivity Boost
Impact
Highest effect
B+ Goal FitB Strength of SupportC- CoverageA+ Formula Quality

L-theanine at a 100mg dose supports a state of relaxed wakefulness and may contribute to improved attention. This single-ingredient approach is well suited for individuals looking for focused cognitive support without additional stimulants.

This amino acid is frequently used to modulate the stress response while maintaining mental clarity. It appears well aligned for users seeking a simple and clean tool for focus.

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Brain Health
Impact
High effect
B+ Goal FitB+ Strength of SupportD CoverageA+ Formula Quality

L-theanine supports focused alertness and relaxation by modulating brain wave activity. This amino acid may contribute to mental performance and resilience during periods of daily stress.

The formulation provides straightforward support for a calm mental state without sedation. Meaningful dosages of the active L-isomer ensure that the biological pathways for mental focus are well addressed.

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Ingredients

IngredientAmount per serving
L-Theanine
100 mg
Gluten Free Adults 18–50 Dairy Free
Report overview
Theanine · 100 mg OverallScore88
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
A high-quality 100mg L-Theanine supplement that provides clean stress support in a focused capsule. It is an excellent baseline option for individuals looking to start with a standard clinical dose.
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