$22.72 $0.37 per serving
Product analysis
L-Theanine 200 mg may help you feel calmer under stress and support some aspects of sleep quality.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality28
The identified L-theanine form is a positive feature. B6 has a named source, but its form quality remains uncertain.
Ingredient Transparency81
Amounts are stated for both active ingredients, allowing serving comparisons. The main theanine listing does not name its precise form, even though L-theanine is identified elsewhere.
Value For Money65
The serving cost appears reasonable for the theanine amount. There is not enough information to judge value separately for the added B6.
Customer Satisfaction77
Customer ratings are favorable, with a useful number of buyers contributing. They describe satisfaction rather than proving effectiveness or safety.
Product Focus76
Relaxation and some aspects of sleep quality are the clearest potential uses. Attention findings are mixed, and the added B6 does not establish extra cognitive benefit.
- Format
Capsule - Container
- 60 Capsule(s)
- Per serving
- $0.37
- Customer rating
- 4.7 · 491 ratings
Goals
Impact
High effect
Vitamin B6 · 4.25 mgTheanine · 200 mg
Impact
High effect
Vitamin B6 · 4.25 mgTheanine · 200 mg
Impact
Highest effect
Theanine · 200 mg
Impact
High effect
Vitamin B6 · 4.25 mg
Impact
High effect
Vitamin B6 · 4.25 mgTheanine · 200 mg
Impact
Moderate effect
Vitamin B6 · 4.25 mg
Impact
Highest effect
Vitamin B6 · 4.25 mgTheanine · 200 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin B6 (Pyridoxine Hydrochloride) | 4.25 mg | |
Suntheanine L-Theanine | 200 mg |
Theanine · 200 mg OverallScore96
Each serving provides 200 mg of L-theanine. The cost for the amount of L-theanine is moderate. A branded L-theanine source is noted, but its name is not available here.
How this ingredient is rated
Active Ingredient Quality & Bioavailability100
The form is L-theanine. A branded L-theanine source is noted, but its name is not available here.
Isomer Specificity (L-Theanine)
The label names L-theanine.
Branded Forms & Purity Standards
A branded L-theanine source is noted, but its name is not available here.
Dose, Safety & Label Transparency100
Each serving provides 200 mg of L-theanine.
Theanine Dosage Efficacy
Each serving provides 200 mg of L-theanine.
Label Transparency & Blends
The label states 200 mg of L-theanine per serving.
Value80
The cost for the amount of L-theanine is moderate.
Price per 100mg L-Theanine
The cost for the amount of L-theanine is moderate.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
- 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.
- 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.
- Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task.
- Effects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study.
- Vitamin B12, B6, or Folate and Cognitive Function in Community-Dwelling Older Adults: A Systematic Review and Meta-Analysis.
- Relationship between serum pyridoxal 5'-phosphate concentration and cognitive function in older Japanese.
- A randomized, controlled trial to evaluate the efficacy of pyridoxine and ascorbic acid on cognitive function and quality of life in post-menopausal women.
- Lower Plasma Vitamin B-6 is Associated with 2-Year Cognitive Decline in the Boston Puerto Rican Health Study.
- Are Dietary Supplements and Nutraceuticals Effective for Musculoskeletal Health and Cognitive Function? A Scoping Review.
- Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study.
- Acute effects of theanine, caffeine and theanine-caffeine combination on attention.
- Safety and Efficacy of High-Dose Vitamin B6 as an Adjunctive Treatment for Antipsychotic-Induced Hyperprolactinemia in Male Patients With Treatment-Resistant Schizophrenia.
- Associations between dietary B vitamin intakes and cognitive function among elderly individuals: An observational study.
- Lower water-soluble vitamins and higher homocysteine are associated with neurodegenerative diseases.
- Associations of one-carbon metabolism, related B-vitamins and ApoE genotype with cognitive function in older adults: identification of a novel gene-nutrient interaction.
- Safety and Efficacy of AlphaWave® L-Theanine Supplementation for 28 Days in Healthy Adults with Moderate Stress: A Randomized, Double-Blind, Placebo-Controlled Trial.
- 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.
- Vitamin B-6 supplementation in elderly men: effects on mood, memory, performance and mental effort.
- The effect of vitamin B6 on cognition.