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L-Theanine 100 mg

California Gold Nutrition

4.7
(20541 ratings)
Theanine 100 mg
Product Image
Score 88.0

A highly-rated, single-ingredient L-Theanine supplement from a trusted brand, offering a standard effective dose for general relaxation and focus, though higher doses or blends are available for enhanced results.

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 88.0

A highly-rated, single-ingredient L-Theanine supplement from a trusted brand, offering a standard effective dose for general relaxation and focus, though higher doses or blends are available for enhanced results.

Analysis

This product provides 100mg of L-Theanine per capsule, a common and often effective dose for promoting relaxation, mental focus, and supporting sleep. L-Theanine, an amino acid found primarily in green tea, is known for its ability to cross the blood-brain barrier and increase alpha brain wave activity, which is associated with a state of 'alert calm.' Nutritionists and online reviews widely support L-Theanine for its anxiolytic properties without causing drowsiness. The California Gold Nutrition brand is well-regarded for quality and transparency, contributing to the product's high review count and positive reception. However, for individuals seeking more pronounced effects for specific goals like intense stress relief or sleep initiation, higher doses or combination products might be more effective.

Pros
  • Contains pure L-Theanine, a well-researched ingredient for mood and focus.
  • From California Gold Nutrition, a highly reputable brand known for quality and rigorous testing.
  • Boasts a very high volume of positive customer reviews, indicating widespread satisfaction.
  • The 100mg dosage is a commonly recommended and effective starting point for many users.
Cons
  • May not provide sufficient potency for individuals requiring higher doses for significant stress reduction or sleep support.
  • Lacks complementary ingredients that could offer synergistic benefits for specific goals, such as other calming herbs or sleep aids.
  • Its price per serving is competitive but not the absolute lowest when compared to some other 100mg L-Theanine options.
Warnings
  • While L-Theanine is generally well-tolerated, individuals sensitive to supplements should start with a lower dose.
  • Consult a healthcare professional before use if pregnant, nursing, taking medication, or have a medical condition.
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$9.43($0.15 per serving)
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$ 9.43
Amazon
$ 10.84
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Effectiveness for goals

Dosage, timing & forms

Safety & interactions

Ingredients

IngredientAmount per serving
L-Theanine 100 mg
Gluten Free Adults 18–50 Dairy Free
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Categories

As a pure L-Theanine product, this supplement excels within its category by offering a clean formulation from a trusted brand at a standard effective dose. Its high consumer satisfaction reflects its reliability and quality as a Theanine supplement. While higher dosages are available, this 100mg option serves as an excellent baseline.

Goals

L-Theanine is excellent for promoting 'alert calm' by increasing alpha brain waves, which can enhance focus and attention without the jitters often associated with stimulants. The 100mg dose is effective for this purpose, and its single-ingredient nature makes it a pure choice for mental clarity, though some users might prefer a combination with a small amount of caffeine for synergistic focus.
L-Theanine is widely recognized by nutritionists and supported by online reviews for its ability to promote a state of calm without sedation, making it effective for mild to moderate stress relief. While 100mg is beneficial, higher doses (200mg+) are often used for more significant stress reduction, and some alternatives combine it with other adaptogens for enhanced effects.
By promoting relaxation and reducing anxiety, L-Theanine can significantly contribute to a more positive and stable mood. The calming effect helps mitigate irritability and mental tension, which are often detrimental to mood. For more pronounced mood elevation, some alternatives may offer synergistic ingredients like 5-HTP or specific herbs.
92 Value

L-Theanine 200 mg

Advance Physician Formulas
4.7
(584 ratings)
This product offers double the L-Theanine content (200mg) per serving at the exact same price per serving (15 cents), representing significantly more active ingredient for the same cost, thus offering superior value for those seeking a higher dose.
91 Value

L-Theanine 200 mg

California Gold Nutrition
4.7
(13349 ratings)
As a direct upgrade from the original, this product by the same brand provides 200mg of L-Theanine per capsule for only a marginal increase in price per serving (16 cents vs 15 cents), offering double the potency with very little additional cost.
90 Value

Double Strength L-Theanine 200 mg

NOW
4.7
(20328 ratings)
Offering 200mg of L-Theanine per serving along with Inositol, this product provides double the L-Theanine dose of the original for a slightly higher but still competitive price per serving (18 cents), adding Inositol for synergistic mood support and enhanced value.
93 Performance

Anxiety & Stress Relief

Nature's Bounty
4.4
(9084 ratings)
This product combines a higher dose of L-Theanine (200mg) with Ashwagandha extract, an adaptogen renowned for its stress-reducing properties, offering a more potent and comprehensive approach to anxiety and stress relief than L-Theanine alone.
95 Performance

Sleep Regimen 3-in-1

NOW
4.5
(1089 ratings)
Specifically formulated for sleep, this alternative provides a robust blend of L-Theanine (200mg), Melatonin, and 5-HTP, addressing multiple pathways for sleep induction and quality, making it a superior choice for sleep support compared to a single ingredient L-Theanine product.
92 Performance

Totally Zen

Carlson
4.8
(324 ratings)
This alternative offers a comprehensive blend of calming ingredients, including L-Theanine (100mg), GABA, Magnesium, and B-vitamins, providing broader support for stress, mood, and overall nervous system health, making it a more multifaceted option for relaxation.
90 Budget

L-Theanine 100 mg

NOW
4.7
(8854 ratings)
This alternative offers the same 100mg L-Theanine dose per serving at a slightly lower price point (13 cents per serving vs 15 cents), also including decaffeinated Green Tea for added antioxidant benefits and broad appeal.
89 Budget

Chewable L-Theanine 100 mg

NOW
4.6
(1867 ratings)
Providing 100mg of L-Theanine at a lower price per serving (13 cents), this chewable form offers convenience and a different consumption method, along with added Inositol and Taurine for enhanced mood and relaxation support.
80 Budget

3 a.m. Melatonin Fast Dissolve Lavender Vanilla

Natrol
4.7
(259 ratings)
While containing a lower L-Theanine dose (50mg), this product is significantly cheaper per serving (13 cents) and includes Melatonin, making it a budget-friendly option primarily for sleep support, one of the original product's goals.
92 Value

L-Theanine 200 mg

Advance Physician Formulas
4.7
(584 ratings)
This product offers double the L-Theanine content (200mg) per serving at the exact same price per serving (15 cents), representing significantly more active ingredient for the same cost, thus offering superior value for those seeking a higher dose.
91 Value

L-Theanine 200 mg

California Gold Nutrition
4.7
(13349 ratings)
As a direct upgrade from the original, this product by the same brand provides 200mg of L-Theanine per capsule for only a marginal increase in price per serving (16 cents vs 15 cents), offering double the potency with very little additional cost.
90 Value

Double Strength L-Theanine 200 mg

NOW
4.7
(20328 ratings)
Offering 200mg of L-Theanine per serving along with Inositol, this product provides double the L-Theanine dose of the original for a slightly higher but still competitive price per serving (18 cents), adding Inositol for synergistic mood support and enhanced value.
93 Performance

Anxiety & Stress Relief

Nature's Bounty
4.4
(9084 ratings)
This product combines a higher dose of L-Theanine (200mg) with Ashwagandha extract, an adaptogen renowned for its stress-reducing properties, offering a more potent and comprehensive approach to anxiety and stress relief than L-Theanine alone.
95 Performance

Sleep Regimen 3-in-1

NOW
4.5
(1089 ratings)
Specifically formulated for sleep, this alternative provides a robust blend of L-Theanine (200mg), Melatonin, and 5-HTP, addressing multiple pathways for sleep induction and quality, making it a superior choice for sleep support compared to a single ingredient L-Theanine product.
92 Performance

Totally Zen

Carlson
4.8
(324 ratings)
This alternative offers a comprehensive blend of calming ingredients, including L-Theanine (100mg), GABA, Magnesium, and B-vitamins, providing broader support for stress, mood, and overall nervous system health, making it a more multifaceted option for relaxation.
Report alternatives