Product Image

Counter Cravings

HUM
4.4
★ ★ ★ ★ ★
(41 ratings)
Theanine 200 mg
Product Image
Score69
Properly dosed theanine sits inside an expensive metabolic blend with added interaction concerns and weak relevance to broad cognitive goals.
How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:
Stress Relief
Cognitive Support
Mental Focus

Score 69

Properly dosed theanine sits inside an expensive metabolic blend with added interaction concerns and weak relevance to broad cognitive goals.
How scoring works
$50.00($0.83 per serving)
iHerb
$ 50.00
Report prices

Analysis

The capsule combines substantial L-theanine with coleus extract, Chromax, and fucoxanthin-containing seaweed extract. Its main positioning is metabolic and craving support rather than a simple calming formula.

Theanine is generic but properly dosed. Coleus and chromium introduce blood-pressure and blood-glucose considerations that a standalone theanine product avoids.

The broader blend may suit users specifically seeking these ingredients together. It is expensive and unnecessarily complex for stress or focus alone.

Who is it for
  • Adults specifically seeking a cravings-focused blend
  • Users wanting theanine with metabolic ingredients
  • People comfortable with a complex formula
Best for
  • Multi-ingredient craving support
  • Calm within a metabolic routine
  • Combined chromium and forskohlin use

Pros

  • Preferred theanine amount
  • All active amounts disclosed
  • Forskohlin is identified
  • Chromax source is named

Cons

  • Premium cost
  • Generic theanine source
  • Complex formula for calming use
  • Weak fit for sleep or broad cognition

Warnings

  • Chromium may add to insulin or sulfonylurea effects
  • Coleus forskohlii may lower blood pressure and increase dizziness with antihypertensives
  • Coleus may increase bleeding concerns with anticoagulant or antiplatelet medicines

Nutrient quality

75 High impact

Branded Chromax improves identity, while generic theanine and botanical extracts have limited form detail. Theanine is meaningful, but the practical adequacy of the botanical extracts is less certain.

.

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

57 Moderate impact

The supplied aggregate satisfaction signal is favorable. Limited feedback volume and absent narrative evidence leave the experience less certain.

.

Value for money

54 Moderate impact

Several specialty ingredients add cost, but the formula lacks strong quality detail. Serving-level value is weak compared with focused theanine products.

.
Report analysis

Goals

Stress Relief
Stress Relief
Impact
High effect
B- Goal FitA- Strength of SupportD+ CoverageD+ Formula Quality
Theanine · 200 mg

L-theanine directly supports relaxed attention, while the other ingredients target cravings and metabolism rather than stress. Theanine has useful human evidence for acute calm, whereas forskolin, chromium, and fucoxanthin do not establish comparable stress relief.

The 200 mg L-theanine amount sits in a well-aligned focused range. L-theanine and all ingredient amounts are disclosed, but branded purity or independent testing is absent.

Study evidence
Theanine Supportive 16 studies
Cognitive Support
Cognitive Support
Impact
High effect
B- Goal FitB+ Strength of SupportD CoverageD Formula Quality
Theanine · 200 mg

L-theanine provides a well-aligned amount for calm attention and reduced mental tension. The single-capsule serving is clearly disclosed.

No caffeine partner, memory active, or brain-targeted choline source is included. Coleus, chromium, and seaweed are aimed at appetite or metabolic support rather than cognition.

Study evidence
Theanine Supportive 25 studies
Mental Focus
Mental Focus
Impact
High effect
C Goal FitB+ Strength of SupportD+ CoverageC- Formula Quality
Theanine · 200 mg

A clearly disclosed 200 mg L-theanine amount may support calm attention and reduce distraction from tension. The formula does not include caffeine or another alertness active, so the expected focus effect is subtle.

Forskolin, chromium, and fucoxanthin are aimed at appetite or metabolism rather than cognition. People using glucose-lowering medicine should note that chromium may add to blood-sugar-lowering effects.

Study evidence
Theanine Supportive 19 studies
Mood Support
Mood Support
Impact
Moderate effect
C Goal FitB Strength of SupportD CoverageF Formula Quality

A well-dosed L-theanine serving can support calm attention and reduce stress reactivity. The remaining ingredients focus on appetite and metabolism rather than mood.

Theanine is clearly identified at a useful amount, although no branded purity standard is provided. Coleus, chromium, and fucoxanthin add little mood coverage and make the formula less coherent for this goal.

Study evidence
Theanine Supportive 12 studies
Productivity Boost
Productivity Boost
Impact
Moderate effect
C Goal FitB- Strength of SupportD CoverageD- Formula Quality
Theanine · 200 mg

L-theanine can support calm attention and reduce mental tension. The remaining ingredients primarily target appetite and weight management.

Theanine is supplied at a meaningful amount, while no stimulant or strong neurotransmitter precursor is present. The formula may feel calming but offers limited coverage for alertness, mental energy, or fatigue resistance.

Study evidence
Theanine Supportive 5 studies
Brain Health
Brain Health
Impact
Moderate effect
C- Goal FitB+ Strength of SupportD+ CoverageD- Formula Quality

L-theanine may support calm attention, but the wider formula is designed for cravings and metabolism rather than brain health. Coleus, chromium, and fucoxanthin add little direct cognitive value.

Theanine reaches a useful amount and most actives are clearly quantified. The combination lacks a coherent neurotransmitter, memory, or neuroprotection strategy.

Study evidence
Theanine Supportive 17 studies
Sleep Support
Sleep Support
Impact
Moderate effect
D+ Goal FitA- Strength of SupportD CoverageF Formula Quality
Theanine · 200 mg

Theanine may reduce mental tension, but the product is designed for appetite and weight management rather than sleep. Coleus, chromium, and seaweed extract do not create a nighttime strategy.

Theanine reaches a useful amount and is clearly disclosed. The remaining ingredients are unrelated to sleep and may shift attention toward daytime metabolic use.

Study evidence
Theanine Supportive 8 studies

Ingredients

IngredientAmount per serving
Coleus forskohlii extract powder (Forskohlin)
 250 mg
L-Theanine
200 mg
Chromax
800 mcg
Brown Seaweed (Laminaria japonica) extract (Fucoxanthin)
 15 mg
Gluten Free Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
Theanine · 200 mg OverallScore82
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD+ Value

A clearly disclosed 200 mg L-theanine amount sits in the preferred range for focused use. The generic ingredient provides no branded sourcing or purity assurance. Pricing is premium for the active amount, with the broader botanical formula accounting for part of the cost.

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. 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
  4. 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
  5. Effect of Combined Ingestion of L-Theanine and L-Arginine for Short-Term Psychological Stress in Young Adults: A Randomized Placebo-Controlled Study.
    Furushima D; Sugiyama I; Nomura Y; Unno K; Yamada H · Journal of nutritional science and vitaminology · 2023
    Randomized trial120 participantsStress Relief forTheanine
  6. 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
  7. Acute effects of theanine, caffeine and theanine-caffeine combination on attention.
    Kahathuduwa CN; Dassanayake TL; Amarakoon AMT; Weerasinghe VS · Nutritional neuroscience · 2018
    Clinical trial20 participantsMental Focus Cognitive Support forTheanine
  8. L-theanine improves neurophysiological measures of attention in a dose-dependent manner: a double-blind, placebo-controlled, crossover study.
    Dassanayake TL; Kahathuduwa CN; Weerasinghe VS · Nutritional neuroscience · 2022
    Randomized trial27 participantsMental Focus forTheanine
  9. 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 participantsMental Focus Cognitive Support forTheanine
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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 trialBrain Health Mental Focus Productivity Boost forTheanine
  15. 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 participantsMental Focus Productivity Boost Stress Relief forTheanine
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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