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Suntheanine L-Theanine 100 mg

Natural Factors Stress-Relax
4.7
★ ★ ★ ★ ★
(3623 ratings)
Theanine 200 mg
Product Image
Score96

A high-value 120-count supply of premium Suntheanine chewables for sustained mental composure and focus.

How scoring works
Quantity:120 Tablet(s) • (60 servings)
Goals:
Cognitive Support
Brain Health
Mood Support
Sleep Support
Stress Relief
Mental Focus
Productivity Boost

Score 96

A high-value 120-count supply of premium Suntheanine chewables for sustained mental composure and focus.

How scoring works

Also available as

1 option
60 servings Theanine 200 mg • 60 Tablet(s) • 30 servings $18.87 ($0.62 per serving)
$35.67($0.59 per serving)
Amazon
$ 35.67
iHerb
$ 35.67
Vitacost
$ 35.67
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Analysis

Providing the same 200 mg of premium Suntheanine as the smaller bottle, this version offers better long-term value. It’s ideal for maintaining a consistent state of relaxation and mental focus through busy periods or high-stress months.

The chewable format is especially useful for those who dislike capsules. This product is a reliable, high-quality staple for managing daily cognitive fatigue and stress responses.

Pros

  • Better value with 120 tablets
  • Premium, patented Suntheanine
  • Easy and convenient chewable
  • High clinical potency

Cons

  • Contains some calories/carbs
  • Tablets are quite large

Warnings

  • Contains Xylitol; hazardous to pets
  • Maintain consistent use for best results

Nutrient quality

97 Highest impact

Utilization of Suntheanine ensures maximum isomeric purity and consistent biological activity. The 200mg dose is highly meaningful for achieving measurable effects on mental calm.

Ingredient transparency

100 Highest impact

Active ingredients and dosages are clearly disclosed with no proprietary blends used. The branded ingredient labeling provides clear confirmation of the raw material source and quality.

Customer satisfaction

97 Highest impact

User ratings reflect a high level of approval for the product's quality and performance. A massive volume of feedback confirms the product is reliable and effective for its users.

Value for money

87 Highest impact

The cost per serving is higher than bulk generic options but fair for a premium branded ingredient. This larger supply offers better value compared to the smaller bottle size.

Report analysis

Goals

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

This larger supply of branded Suntheanine provides consistent support for mental clarity and relaxation across several months. The 200mg dose effectively supports the neurological processes needed for a balanced and focused state of mind.

As a pure amino acid supplement, it offers a high degree of transparency and quality control. This product is an excellent foundational tool for individuals looking to enhance their cognitive performance through stress management.

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

Inclusion of Suntheanine L-Theanine facilitates the modulation of alpha brain waves for improved mental focus.

This amino acid appears well aligned with cognitive support goals and provides a focused mechanism for managing daily mental fatigue.

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

Suntheanine L-Theanine at 200 mg per serving.

Providing an ideal clinical dose of this high-purity amino acid supports emotional stability and a balanced response to stress.

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

Suntheanine is provided as the primary active ingredient to support mental relaxation and neurological calm.

Promoting a relaxed state appears well aligned with helping individuals transition into a restful sleep without grogginess.

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

Consists of 200 mg of branded Suntheanine L-Theanine to promote relaxation and mental focus without drowsiness. Suntheanine is recognized for its high purity and consistent performance in clinical stress-relief studies.

The 200 mg dose is well-calibrated for therapeutic results in managing daily tension. As a single-ingredient supplement, it offers exceptional depth for its specific pathway but omits other stress-modulating mechanisms.

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

Suntheanine L-Theanine is delivered at a 200mg dose to support mental clarity and a state of calm alertness. This larger supply ensures consistent use of the premium branded form for sustaining focus and managing stress.

The supplement targets a validated neurological pathway for stress-related cognitive support. High purity and clinical dosing make it well aligned with goals for improved attention and concentration.

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

Suntheanine l-theanine is provided at a therapeutic 200mg dose to support cognitive focus and a calm mental state. This pure isomer may contribute to improved attention spans and reduced mental fatigue during demanding work periods.

The larger quantity format makes this an ideal option for regular use in a productivity routine. It appears well aligned for those seeking to balance the effects of daily stress on mental performance.

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Ingredients

IngredientAmount per serving
Calories
15 Calorie(s)
Total Carbohydrates
4 Gram(s)
Suntheanine L-Theanine
200 mg
Gluten Free Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
Theanine · 200 mg OverallScore96
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
A high-quality Suntheanine® supplement that delivers 200mg for deep relaxation and mental focus. This larger supply is an ideal choice for regular users who value clinical purity and consistent performance.
View ingredientView products
97 Value

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Double Strength L-Theanine 200 mg

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L-Theanine 100 mg

California Gold Nutrition
4.7
★★★★★
(23398 ratings)
AlphaWave branded theanine provides professional-grade quality with high standardized purity at an extremely accessible value. It is an ideal option for users wanting high-tier ingredients without markups.
Other sellers (1)
98 Value

Double Strength L-Theanine 200 mg

NOW
4.7
★★★★★
(41779 ratings)
The significant 200mg dose and addition of inositol provide much broader cognitive support for a manageable cost. It represents a high-performing choice for daily composure and emotional health.
Other sellers (5)
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L-Theanine 200 mg Double Strength

Swanson
4.7
★★★★★
(500 ratings)
Standardized Suntheanine ensures high isomeric purity for reliable biological activity at a very sustainable daily cost. It is a top choice for high-quality, professional-grade stress management.
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Thorne
4.7
★★★★★
(1327 ratings)
Uses the highest-grade Suntheanine source from a brand recognized for superior manufacturing standards. This ensuring exceptional purity and consistency for individuals with high cognitive focus goals.
Other sellers (3)
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ZenMind

NutriCology
4.6
★★★★★
(285 ratings)
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Other sellers (3)
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Suntheanine L-Theanine 125 mg

Natural Factors Stress-Relax
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★★★★★
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Increases the active dose to 250mg of branded Suntheanine, providing superior therapeutic support for managing stress. The higher concentration is better suited for promoting a deep state of calm.
Other sellers (2)
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