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L-Theanine 200 mg

Source Naturals Serene Science
4.5
(335 ratings)
Theanine 200 mg
Product Image
Score 80.0

A quality 200mg L-Theanine from a respected brand, but overpriced for a pure formulation.

Quantity: 60 Capsule(s)Servings size: 1 Capsule(s) (60 servings)
Selected goals:
Other goals:
Stress Relief
Mental Focus
Brain Health
Mood Support
Sleep Support

Score 80.0

A quality 200mg L-Theanine from a respected brand, but overpriced for a pure formulation.

Analysis

The 200mg L-Theanine dose is well-regarded by nutritionists for its ability to induce a state of calm alertness and reduce anxiety. Source Naturals has a good reputation for ingredient quality and product formulation, particularly within its 'Serene Science' line. However, for a straightforward L-Theanine product, the cost is on the higher side. Online reviews generally confirm its effectiveness, but price comparisons reveal less competitive value for a standalone L-Theanine supplement.

Pros
  • Contains 200mg of L-Theanine, an effective and widely recommended dose.
  • From Source Naturals, a long-standing and reputable brand in the natural health industry.
  • Part of the 'Serene Science' line, indicating a focus on mood and stress support.
  • Pure L-Theanine formulation without unnecessary additives.
Cons
  • High price per serving ($0.41) compared to many other 200mg L-Theanine products.
  • Does not use patented forms like Suntheanine or AlphaWave, which some prefer, despite the higher price.
  • Offers less value for money than competitively priced alternatives with similar efficacy.
Warnings
  • No specific warnings beyond general L-Theanine considerations.
$22.36($0.37 per serving)
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Ingredients
IngredientAmount per serving
L-Theanine 200 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free
Categories
Theanine 80.0
While effective in dosage and from a trusted brand, its higher price point makes it less competitive within the broader Theanine collection compared to more value-oriented alternatives.
Goals
Stress Relief 90.0
The 200mg L-Theanine dose is highly effective for promoting relaxation and significantly reducing feelings of stress and anxiety without causing drowsiness.
Mental Focus 88.0
L-Theanine supports the production of alpha brain waves, which contribute to a state of calm alertness, enhancing concentration and mental clarity.
Mood Support 88.0
Its impact on serotonin and dopamine pathways helps in balancing mood and fostering a sense of well-being, aiding emotional regulation.
92 Value

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4.7
(20326 ratings)
Delivers 200mg L-Theanine with Inositol for $0.18/serving, providing outstanding overall value with additional beneficial ingredients from a top-tier brand.
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Swanson
4.6
(361 ratings)
Offers 200mg of Suntheanine L-Theanine for a competitive $0.26/serving, providing excellent value for a patented form, making it a strong contender.
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Suntheanine L-Theanine 125 mg

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4.6
(1292 ratings)
Provides a higher 250mg dose of Suntheanine, a patented form, offering potentially more pronounced effects for comprehensive L-Theanine benefits.
91 Performance

Suntheanine L-Theanine 100 mg

Natural Factors Stress-Relax
4.7
(1978 ratings)
Features 200mg of Suntheanine, a superior patented L-Theanine form, which often results in higher perceived efficacy and quality compared to generic L-Theanine.
89 Performance

Enhanced Stress Relief

Life Extension
4.5
(861 ratings)
Combines 200mg L-Theanine with 300mg Lemon Balm, offering a powerful synergistic blend for enhanced stress relief and mood support, providing a broader approach.
90 Budget

L-Theanine 200 mg

Advance Physician Formulas
4.7
(584 ratings)
Offers the same 200mg L-Theanine dose at a significantly lower price ($0.15/serving vs $0.41), providing much better value.
92 Budget

L-Theanine 200 mg

California Gold Nutrition
4.7
(13349 ratings)
Provides 200mg L-Theanine for $0.16/serving, offering superior value and comparable efficacy at a substantially lower price.
95 Budget

Double Strength L-Theanine 200 mg

NOW
4.7
(20326 ratings)
Delivers 200mg L-Theanine plus Inositol at an outstanding $0.18/serving, offering more ingredients and superior value from a highly reputable brand.
92 Value

L-Theanine 200 mg

California Gold Nutrition
4.7
(13349 ratings)
Offers a comparable 200mg L-Theanine dose at an excellent price ($0.16/serving), representing superior value for a pure L-Theanine supplement.
95 Value

Double Strength L-Theanine 200 mg

NOW
4.7
(20326 ratings)
Delivers 200mg L-Theanine with Inositol for $0.18/serving, providing outstanding overall value with additional beneficial ingredients from a top-tier brand.
90 Value

L-Theanine 200 mg Double Strength

Swanson
4.6
(361 ratings)
Offers 200mg of Suntheanine L-Theanine for a competitive $0.26/serving, providing excellent value for a patented form, making it a strong contender.
92 Performance

Suntheanine L-Theanine 125 mg

Natural Factors Stress-Relax
4.6
(1292 ratings)
Provides a higher 250mg dose of Suntheanine, a patented form, offering potentially more pronounced effects for comprehensive L-Theanine benefits.
91 Performance

Suntheanine L-Theanine 100 mg

Natural Factors Stress-Relax
4.7
(1978 ratings)
Features 200mg of Suntheanine, a superior patented L-Theanine form, which often results in higher perceived efficacy and quality compared to generic L-Theanine.
89 Performance

Enhanced Stress Relief

Life Extension
4.5
(861 ratings)
Combines 200mg L-Theanine with 300mg Lemon Balm, offering a powerful synergistic blend for enhanced stress relief and mood support, providing a broader approach.