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Enhanced Stress Relief

Life Extension
4.5
★ ★ ★ ★ ★
(992 ratings)
Theanine 200 mg
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Score82
A coherent theanine-and-lemon-balm formula for stress and evening relaxation, with premium pricing and limited daytime breadth.
How scoring works
Quantity:30 Capsule(s) • (30 servings)
Goals:
Stress Relief
Sleep Support
Brain Health
Productivity Boost
Cognitive Support
Mental Focus
Mood Support

Score 82

A coherent theanine-and-lemon-balm formula for stress and evening relaxation, with premium pricing and limited daytime breadth.
How scoring works
$21.00($0.70 per serving)
Pure Formulas
$ 21.00
Amazon
$ 21.00
iHerb
$ 21.00
Vitacost
$ 21.00
Report prices

Analysis

The capsule pairs a substantial L-theanine amount with lemon balm extract linked to hydroxycinnamic and rosmarinic acids. The combination targets calm and stress-related tension from two compatible directions.

Theanine is generic rather than branded, while the repeated lemon-balm entries make the exact standardization presentation less intuitive. Neither active is intended as an acute alertness aid.

The formula fits evening use or high-stress periods better than demanding focus tasks. Cost is the main practical drawback.

Who is it for
  • Adults seeking stronger stress support
  • Users wanting theanine with lemon balm
  • People focused on evening relaxation
Best for
  • Stress-related tension
  • Pre-sleep calming
  • Two-pathway relaxation

Pros

  • Substantial theanine amount
  • Standardized lemon balm
  • Complementary calming actives
  • Exact weights disclosed

Cons

  • High serving cost
  • Generic theanine source
  • Lemon-balm entries are repetitive
  • Less suited to peak alertness

Warnings

  • The combination may cause drowsiness
  • Sedatives and alcohol may intensify sleepiness
  • Avoid driving until individual response to the combined calming formula is known

Nutrient quality

93 Highest impact

Standardized lemon balm improves form quality, while theanine lacks branded verification. Both theanine and lemon balm are supplied at meaningful amounts.

.

Ingredient transparency

84 Highest impact

Every listed active has a specific amount, which makes the core formula straightforward to assess. The supplied data omits a complete excipient list and full intake directions.

.

Customer satisfaction

66 High impact

The supplied aggregate satisfaction signal is favorable. A large amount of feedback makes that aggregate signal reasonably stable, but no narrative evidence was provided.

.

Value for money

82 Highest impact

Two meaningful calming actives reasonably support the premium serving cost. Serving-level value is fair rather than exceptional.

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Report analysis

Goals

Stress Relief
Stress Relief
Impact
Highest effect
A Goal FitA Strength of SupportB+ CoverageA Formula Quality
Theanine · 200 mg

L-theanine and standardized lemon balm provide well-targeted support for calm without relying on a large blend. Both ingredients are disclosed at meaningful amounts.

The pairing covers fast neurotransmitter support and a complementary botanical pathway. The generic theanine source leaves some uncertainty about ingredient-quality verification.

Study evidence
Theanine Supportive 16 studies
Sleep Support
Sleep Support
Impact
Highest effect
B Goal FitA Strength of SupportB CoverageA+ Formula Quality
Theanine · 200 mg

L-theanine and standardized lemon balm form a focused calming combination that may help users unwind before bed. The 200 mg theanine amount and 300 mg lemon balm extract are substantial and individually disclosed.

The formula mainly reduces mental tension rather than regulating circadian timing or maintaining sleep through the night. Both actives can add to drowsiness when combined with sedative medicines or other sleep aids.

Study evidence
Theanine Supportive 8 studies
Brain Health
Brain Health
Impact
Highest effect
B Goal FitA Strength of SupportB- CoverageA Formula Quality

L-theanine at 200 mg supports calm focus, while standardized lemon balm may reduce stress-related mental strain. The two ingredients form a practical mental-resilience combination without sedation-heavy ingredients.

Lemon balm lists rosmarinic and hydroxycinnamic acids, although their exact percentages are not shown. The formula is well aligned with stress and attention but does not directly support neuronal membranes or cerebral energy.

Study evidence
Theanine Supportive 17 studies
Productivity Boost
Productivity Boost
Impact
Highest effect
B Goal FitA Strength of SupportC+ CoverageA Formula Quality
Theanine · 200 mg

L-theanine supplies a well-supported calming dose that may help maintain focus under stress. Standardized lemon balm adds relaxation support but may be less suitable when maximum alertness is needed.

The exact active amounts and lemon balm marker compounds are clearly disclosed. The calming combination may cause drowsiness in sensitive users, particularly when combined with sedatives.

Study evidence
Theanine Supportive 5 studies
Cognitive Support
Cognitive Support
Impact
Highest effect
B Goal FitA Strength of SupportC+ CoverageA Formula Quality
Theanine · 200 mg

Theanine and lemon balm directly support calm attention and stress-related mental performance. Theanine reaches a commonly useful amount, while standardized lemon balm adds a complementary calming pathway.

The combination is better suited to reducing tension than improving memory or processing speed. Its focused two-ingredient design makes each contribution easy to assess.

Study evidence
Theanine Supportive 25 studies
Mental Focus
Mental Focus
Impact
Highest effect
B Goal FitA Strength of SupportC CoverageA Formula Quality
Theanine · 200 mg

L-theanine is well dosed for calm attention, while lemon balm may help when stress disrupts concentration. The pairing favors a relaxed mental state rather than stimulation.

Exact amounts are disclosed, and the lemon balm extract names active marker compounds. No alertness or neurotransmitter precursor is included, so the formula is most relevant when tension is the main barrier to focus.

Study evidence
Theanine Supportive 19 studies
Mood Support
Mood Support
Impact
High effect
C+ Goal FitA- Strength of SupportC+ CoverageA+ Formula Quality

L-theanine and standardized lemon balm provide complementary calming support for stress-related tension. Both actives are supplied at meaningful amounts.

The formula is focused and clearly disclosed, although it addresses a narrow relaxation pathway rather than broader mood biology. Theanine uses a generic source rather than a branded purity standard.

Study evidence
Theanine Supportive 12 studies

Ingredients

IngredientAmount per serving
Lemon Balm extract (Hydroxycinnamic Acid, Rosmarinic Acid)
 300 mg
L-Theanine
200 mg
Adults 18–50
Report overview
Theanine · 200 mg OverallScore88
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value

A preferred L-theanine dose is clearly disclosed, though the source is generic rather than branded. Standardized lemon balm adds a complementary calming ingredient without obscuring the theanine amount. Cost per active amount remains competitive.

View ingredientView products
Loading alternative details
87 Performance

L-Theanine 200 mg Double Strength

Swanson
<p>200 mg of clearly identified branded L-theanine gives the formula a clear and relevant foundation. The more focused formula is easier to assess than the original multi-ingredient blend and avoids unrelated active ingredients.</p>
85 Performance

L-Theanine 150 mg

Solgar
<p>150 mg of clearly identified branded L-theanine gives the formula a clear and relevant foundation. The more focused formula is easier to assess than the original multi-ingredient blend and avoids unrelated active ingredients.</p>
87 Performance

L-Theanine 100 mg

California Gold Nutrition
<p>100 mg of clearly identified branded L-theanine gives the formula a clear and relevant foundation. The more focused formula is easier to assess than the original multi-ingredient blend and avoids unrelated active ingredients.</p>
85 Budget

Double Strength L-Theanine 200 mg

NOW
<p>A lower serving cost comes with 200 mg of clearly stated l-theanine. The more focused formula is easier to assess than the original multi-ingredient blend and avoids unrelated active ingredients.</p>
84 Budget

L-Theanine 200 mg

Advance Physician Formulas
<p>A lower serving cost comes with 200 mg of clearly stated l-theanine. The more focused formula is easier to assess than the original multi-ingredient blend and avoids unrelated active ingredients.</p>
83 Budget

L-Theanine 100 mg

California Gold Nutrition
<p>A lower serving cost comes with 100 mg of clearly stated l-theanine. The more focused formula is easier to assess than the original multi-ingredient blend and avoids unrelated active ingredients.</p>
85 Value

L-Theanine 200 mg

California Gold Nutrition
<p>200 mg of clearly stated L-theanine is paired with favorable serving-level value in the supplied data. The more focused formula is easier to assess than the original multi-ingredient blend and avoids unrelated active ingredients.</p>
85 Value

L-Theanine 100 mg

NOW
<p>100 mg of clearly stated L-theanine is paired with favorable serving-level value in the supplied data. The more focused formula is easier to assess than the original multi-ingredient blend and avoids unrelated active ingredients.</p>
84 Value

Suntheanine L-Theanine 125 mg

Natural Factors Stress-Relax
<p>250 mg of clearly identified branded L-theanine is paired with favorable serving-level value in the supplied data. The more focused formula is easier to assess than the original multi-ingredient blend and avoids unrelated active ingredients.</p>
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review.
    Williams JL; Everett JM; D'Cunha NM; Sergi D; Georgousopoulou EN; Keegan RJ; McKune AJ; Mellor DD; Anstice N; Naumovski N · Plant foods for human nutrition (Dordrecht, Netherlands) · 2020
    Systematic review9 studies pooledStress Relief Mood Support forTheanine
  2. A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of AlphaWave® L-Theanine on Stress in a Healthy Adult Population.
    Evans M; McDonald AC; Xiong L; Crowley DC; Guthrie N · Neurology and therapy · 2021
    Randomized trialStress Relief Brain Health forTheanine
  3. L-theanine in the adjunctive treatment of generalized anxiety disorder: A double-blind, randomised, placebo-controlled trial.
    Sarris J; Byrne GJ; Cribb L; Oliver G; Murphy J; Macdonald P; Nazareth S; Karamacoska D; Galea S; Short A; Ee C; Birling Y; Menon R; Ng CH · Journal of psychiatric research · 2020
    Randomized trial46 participantsStress Relief Sleep Support forTheanine
  4. Safety and Efficacy of AlphaWave® L-Theanine Supplementation for 28 Days in Healthy Adults with Moderate Stress: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Moulin M; Crowley DC; Xiong L; Guthrie N; Lewis ED · Neurology and therapy · 2024
    Randomized trial30 participantsStress Relief Mental Focus Productivity Boost forTheanine
  5. Promising, but Not Completely Conclusive-The Effect of l-Theanine on Cognitive Performance Based on the Systematic Review and Meta-Analysis of Randomized Placebo-Controlled Clinical Trials.
    Mátyus RO; Szikora Z; Bodó D; Vargáné Szabó B; Csupor É; Csupor D; Tóth B · Journal of clinical medicine · 2025
    Meta-analysis148 participants5 studies pooledMental Focus forTheanine
  6. Effects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study.
    Baba Y; Inagaki S; Nakagawa S; Kaneko T; Kobayashi M; Takihara T · Journal of medicinal food · 2021
    Randomized trialMental Focus Brain Health Productivity Boost forTheanine
  7. Time for tea: mood, blood pressure and cognitive performance effects of caffeine and theanine administered alone and together.
    Rogers PJ; Smith JE; Heatherley SV; Pleydell-Pearce CW · Psychopharmacology · 2008
    Randomized trial48 participantsMental Focus Productivity Boost forTheanine
  8. Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
    Hidese S; Ogawa S; Ota M; Ishida I; Yasukawa Z; Ozeki M; Kunugi H · Nutrients · 2020
    Randomized trial30 participantsBrain Health Cognitive Support Sleep Support forTheanine
  9. Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Payne ER; Aceves-Martins M; Dubost J; Greyling A; de Roos B · Nutrition reviews · 2025
    Meta-analysis50 studies pooledBrain Health Cognitive Support Mental Focus forTheanine
  10. Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task.
    Foxe JJ; Morie KP; Laud PJ; Rowson MJ; de Bruin EA; Kelly SP · Neuropharmacology · 2012
    Randomized trial27 participantsBrain Health Cognitive Support forTheanine
  11. Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study.
    Dassanayake TL; Wijesundara D; Kahathuduwa CN; Weerasinghe VS · Nutritional neuroscience · 2023
    Randomized trial32 participantsCognitive Support forTheanine
  12. Acute effects of theanine, caffeine and theanine-caffeine combination on attention.
    Kahathuduwa CN; Dassanayake TL; Amarakoon AMT; Weerasinghe VS · Nutritional neuroscience · 2018
    Clinical trial20 participantsCognitive Support Mental Focus forTheanine
  13. Effect of L-theanine on selective attention in a traffic-related reaction task in sleep-deprived young adults: a double-blind placebo-controlled, crossover study.
    Karunaratne UW; Dassanayake TL · Nutritional neuroscience · 2025
    Randomized trial24 participantsMental Focus forTheanine
  14. l-theanine adjunct to sertraline for major depressive disorder: A randomized, double-blind, placebo-controlled clinical trial.
    Shamabadi A; Kafi F; Arab Bafrani M; Asadigandomani H; A Basti F; Akhondzadeh S · Journal of affective disorders · 2023
    Randomized trial60 participantsMood Support forTheanine
  15. L-theanine relieves positive, activation, and anxiety symptoms in patients with schizophrenia and schizoaffective disorder: an 8-week, randomized, double-blind, placebo-controlled, 2-center study.
    Ritsner MS; Miodownik C; Ratner Y; Shleifer T; Mar M; Pintov L; Lerner V · The Journal of clinical psychiatry · 2011
    Randomized trial60 participantsMood Support Stress Relief forTheanine
  16. Comparison of the effects of two amino acids, Gamma-aminobutyric acid (GABA) and L-theanine, on sedation, anxiety, and cognition in preoperative surgical patients - A randomized controlled study.
    Deshpande SS; Kurdi M; Baiju A; Athira AS; Sarasamma AG; Gangadharan AK · Journal of anaesthesiology, clinical pharmacology · 2025
    Randomized trial168 participantsMood Support Stress Relief forTheanine
  17. Anti-stress effect of theanine on students during pharmacy practice: positive correlation among salivary α-amylase activity, trait anxiety and subjective stress.
    Unno K; Tanida N; Ishii N; Yamamoto H; Iguchi K; Hoshino M; Takeda A; Ozawa H; Ohkubo T; Juneja LR; Yamada H · Pharmacology, biochemistry, and behavior · 2014
    Randomized trial20 participantsMood Support forTheanine
  18. Cognitive and affective effects of L-Theanine: a systematic review and meta-analysis of 31 randomized trials.
    Gerolymos C; Saddier E; Boyer L; Fond G · Molecular psychiatry · 2026
    Meta-analysis1,168 participants31 studies pooledProductivity Boost forTheanine
  19. Effects of L-theanine on cognition, mood and sleep: evidence from human trials.
    Cotter J; Kilpatrick HE · Frontiers in nutrition · 2026
    Narrative reviewProductivity Boost forTheanine
  20. Comparison Between Efficacy of Oral Melatonin and Oral L-theanine in Improving Sleep in Cancer Patients Suffering From Insomnia: A Randomised Double-blinded Placebo-controlled Study.
    Kurdi MS; As A; Ladhad DA; Mitragotri MV; Baiju A · Indian journal of palliative care · 2024
    Randomized trial120 participantsSleep Support forTheanine
  21. The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis.
    Bulman A; D'Cunha NM; Marx W; Turner M; McKune A; Naumovski N · Sleep medicine reviews · 2025
    Meta-analysis897 participants19 studies pooledSleep Support forTheanine
  22. In Search of a Safe Natural Sleep Aid.
    Rao TP; Ozeki M; Juneja LR · Journal of the American College of Nutrition · 2016
    Narrative reviewSleep Support forTheanine
  23. Anti-Stress, Behavioural and Magnetoencephalography Effects of an L-Theanine-Based Nutrient Drink: A Randomised, Double-Blind, Placebo-Controlled, Crossover Trial.
    White DJ; de Klerk S; Woods W; Gondalia S; Noonan C; Scholey AB · Nutrients · 2016
    Randomized trial34 participantsStress Relief forTheanine