$20.82 $0.69 per serving
Product analysis
ZenMind may help ease tension and support relaxation, mainly through theanine. GABA has more limited evidence, and the combination has not been shown to provide lasting stress relief.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality20
Neither GABA nor theanine has a clearly stated form. That makes it difficult to verify the exact preparations you would be taking.
Ingredient Transparency63
Both active amounts are disclosed, so you can check the serving. The forms are omitted for both ingredients, leaving their exact identity less clear.
Value For Money65
The theanine offers a more favorable deal for the amount supplied than the GABA does. GABA therefore adds less clear value to the purchase.
Customer Satisfaction72
Customer feedback is positive, though the review base is relatively modest. Those ratings describe satisfaction rather than proving calming or sleep benefits.
Product Focus76
Relaxation and sleep support are the most convincing uses for the formula. The wider links to focus, productivity and mood rest on limited or mixed findings.
- Format
Capsule - Container
- 60 Capsule(s)
- Per serving
- $0.69
- Customer rating
- 4.6 · 230 ratings
Goals
Impact
Highest effect
GABA · 550 mgTheanine · 200 mg
Impact
Highest effect
Theanine · 200 mg
Impact
High effect
Impact
High effect
Theanine · 200 mg
Impact
High effect
Theanine · 200 mg
Impact
Moderate effect
Impact
High effect
Theanine · 200 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
GABA | 550 mg | |
Suntheanine L-Theanine | 200 mg |
Theanine · 200 mg OverallScore96
Each serving provides 200 mg of L-Theanine at a moderate cost for the amount supplied. The source is branded. The amount and form are clearly stated.
How this ingredient is rated
Active Ingredient Quality & Bioavailability100
The form is L-Theanine, the active isomer. The source is branded.
Isomer Specificity (L-Theanine)
The label specifies L-Theanine, the active isomer.
Branded Forms & Purity Standards
The source is branded.
Dose, Safety & Label Transparency100
The serving supplies 200 mg, a substantial amount, and its amount and source are stated.
Theanine Dosage Efficacy
The serving provides 200 mg of theanine, a substantial amount.
Label Transparency & Blends
The theanine amount and source are individually disclosed.
Value80
The cost is moderate for the amount of theanine, based on the full serving price.
Price per 100mg L-Theanine
The cost is moderate for the amount of theanine, based on the full serving price.
GABA · 550 mg OverallScore73
A serving supplies 550 mg of GABA at a high cost. The source is unspecified. The other ingredients include a flow agent, though its identity is not specified here.
How this ingredient is rated
Active Ingredient Quality & Bioavailability70
GABA is listed without a specific source or branded form.
GABA Source & Production Method
GABA is listed without a specific source or branded form.
Dose, Safety & Label Transparency93
The serving lists 550 mg of GABA. The other ingredients include a flow agent, though its identity is not specified here.
GABA Dosage Adequacy & Transparency
The serving lists 550 mg of GABA.
Label Purity & Excipient Quality
The other ingredients include a flow agent, though its identity is not specified here.
Value40
The cost per serving is high.
Price per Effective Dose
The cost per serving is high.
Alternative products
Report alternatives
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.
- 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 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.
- Oral intake of γ-aminobutyric acid affects mood and activities of central nervous system during stressed condition induced by mental tasks.
- Peripartum neuroactive steroid and γ-aminobutyric acid profiles in women at-risk for postpartum depression.
- The role of neurotransmitters in mediating the relationship between brain alterations and depressive symptoms in patients with inflammatory bowel disease.
- Occipital gamma-aminobutyric acid and glutamate-glutamine alterations in major depressive disorder: An mrs study and meta-analysis.
- Systematic review of gamma-aminobutyric-acid inhibitory deficits across the reproductive life cycle.
- l-theanine adjunct to sertraline for major depressive disorder: A randomized, double-blind, placebo-controlled clinical trial.
- 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.
- The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review.
- 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.
- Anti-stress effect of theanine on students during pharmacy practice: positive correlation among salivary α-amylase activity, trait anxiety and subjective stress.
- Cognitive and affective effects of L-Theanine: a systematic review and meta-analysis of 31 randomized trials.