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Suntheanine L-Theanine 100 mg

Natural Factors Stress-Relax
4.7
★ ★ ★ ★ ★
(3623 ratings)
Theanine 200 mg
Product Image
Score 82

A high-quality Suntheanine L-Theanine product at a good dose with overwhelming positive customer feedback, though with a minor naming discrepancy.

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

leaderboard Score 82

A high-quality Suntheanine L-Theanine product at a good dose with overwhelming positive customer feedback, though with a minor naming discrepancy.

How scoring works
$35.67($0.59 per serving)
Amazon
$ 35.67
iHerb
$ 35.67
Vitacost
$ 35.67
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psychologyAnalysis

Natural Factors Stress-Relax Suntheanine L-Theanine delivers 200 mg of Suntheanine per tablet. Suntheanine is a patented form of L-Theanine recognized for its ability to foster alpha brain waves, which are associated with a state of calm, alert relaxation without drowsiness.

This supplement is an excellent choice for individuals seeking to manage daily stress, enhance mental focus, or gently prepare for sleep. The tablet form, along with 15 calories and 4g of carbohydrates, suggests it might be a chewable or flavored tablet, which could be a preference for some users.

The product boasts an exceptionally high number of customer reviews, indicating widespread positive reception and effectiveness. While the product name lists 100mg, the ingredient panel clearly states 200mg, which is the dosage used for this analysis.

thumb_upPros
  • Contains Suntheanine, a premium, branded form of L-Theanine
  • Provides an effective 200 mg dose of L-Theanine per serving
  • Exceptionally high customer review count indicates strong satisfaction
  • Part of the reputable Natural Factors Stress-Relax line
thumb_downCons
  • Product name (100 mg) conflicts with ingredient list (200 mg) for L-Theanine dose
  • Contains calories and carbohydrates, which some users may prefer to avoid
  • Price per serving is on the higher side for a single-ingredient L-Theanine
warningWarnings
  • Consult a healthcare professional before use if pregnant, nursing, or have a medical condition.
  • Individual responses to L-Theanine may vary.
  • Monitor blood sugar if sensitive to carbohydrate intake.
scienceNutrient quality
90 Highest impact

<p>The use of Suntheanine, a patented and highly regarded form of L-Theanine, signifies a commitment to high nutrient quality. Suntheanine is recognized for its purity and specific efficacy.</p>

visibilityIngredient transparency
70 High impact

<p>While the active ingredient (Suntheanine L-Theanine) and its 200mg dosage are clearly listed, the discrepancy where the product name says '100mg' causes minor confusion. The Calories and Total Carbohydrates are also transparently displayed.</p>

workspace_premiumValue for money
85 Highest impact

<p>Despite a slightly higher price per serving, the inclusion of high-quality Suntheanine and overwhelmingly positive customer satisfaction makes this product an excellent value. The proven efficacy balances the cost.</p>

thumb_upCustomer satisfaction
95 Highest impact

<p>With an astounding 3593 reviews, this product demonstrates exceptionally high customer satisfaction. This extensive positive feedback strongly supports its effectiveness and popularity among users.</p>

storefrontBrand
75 High impact

<p>Natural Factors Stress-Relax is a well-established brand, particularly known for its focus on calming and mood support products. This specialization often indicates careful formulation in relevant areas.</p>

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track_changesGoals
flagStress Relief
Impact
Highest effect
Suntheanine is exceptionally effective at helping the body manage daily stress by promoting a deep sense of calm and reducing feelings of tension and restlessness. It smooths the body's response to stressors.
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flagMood Support
Impact
Highest effect
Suntheanine is highly effective at promoting alpha brain waves, which are linked to a relaxed mental state and can significantly support a balanced mood. It helps to calm emotional overactivity.
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flagCognitive Support
Impact
Highest effect
By fostering a state of calm alertness, Suntheanine can enhance focus, concentration, and attention, thereby supporting various aspects of cognitive function. It helps improve mental clarity without sedation.
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flagMental Focus
Impact
Highest effect
It supports a state of focused calm, which can greatly improve concentration and the ability to maintain attention on demanding tasks. It helps to filter out mental distractions for enhanced performance.
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flagSleep Support
Impact
High effect
While not a direct sedative, the profound calming effects of Suntheanine can help reduce mental chatter and physical tension, making it easier to naturally drift into sleep. It aids in preparing the mind for rest.
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flagProductivity Boost
Impact
High effect
By reducing stress-induced distractions and significantly enhancing mental focus, Suntheanine can indirectly lead to increased productivity. A clear, calm, and concentrated mind performs tasks more efficiently.
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flagBrain Health
Impact
High effect
By fostering a relaxed and focused mind, Suntheanine can contribute to maintaining overall brain health. A less stressed and more focused brain is generally a healthier and more efficient brain.
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flagEnergy
Impact
Lower effect
Suntheanine primarily promotes relaxation and a calm mental state, not direct physical energy. Any feeling of 'energy' might stem from reduced stress or improved mental clarity, not stimulant effects.
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flagWeight Loss
Impact
Situational effect
There is no direct evidence to suggest that Suntheanine L-Theanine plays a specific role in weight loss. Its primary benefits are related to mood, stress, and cognitive function, not metabolic regulation.
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scienceIngredients
IngredientAmount per serving
Calories
15 Calorie(s)
Total Carbohydrates
4 Gram(s)
Suntheanine L-Theanine
200 mg
grain_off Gluten Free person Adults 18–50 eco Vegan free_breakfast Dairy Free eco Vegetarian
flagReport overview
Theanine 90

This product is an excellent example within the Theanine collection, featuring the branded Suntheanine form. It reliably provides the core benefits associated with L-Theanine.

scienceView ingredientinventory_2View products
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