$16.19 $0.26 per serving
Product analysis
GABAplex may help with calming during stressful situations and winding down before sleep. Its glycine and tyrosine are relatively expensive for the amounts supplied.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality20
Ingredient forms are omitted throughout the formula, making their quality harder to judge. The ingredient names alone do not establish the characteristics of the preparations used.
Ingredient Transparency63
Amounts are disclosed for each ingredient, which helps compare servings. Their forms are omitted, leaving the ingredient descriptions less complete.
Value For Money44
GABA offers reasonably favorable value, but the amounts of glycine and tyrosine are expensive for the cost. Theanine is more middling, giving the mixture an uneven value picture.
Customer Satisfaction73
Customer ratings are very positive, with a modest amount of feedback. The smaller review base makes the satisfaction picture less settled than for a widely reviewed supplement.
Product Focus72
Calming is the clearest purpose, with GABA and theanine making the main possible contributions. Sleep benefits remain limited or uncertain, and the combination is not established to work better than its ingredients separately.
- Format
Capsule - Container
- 60 Capsule(s)
- Per serving
- $0.26
- Customer rating
- 4.7 · 191 ratings
Goals
Impact
Highest effect
Glycine · 250 mgGABA · 250 mgTheanine · 50 mg
L-Tyrosine Not classified
No linked studies yet.
Impact
Moderate effect
Theanine · 50 mgGlycine · 250 mg
Taurine Not classified
No linked studies yet.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
GABA | 250 mg | |
L-Glycine | 250 mg | |
L-Tyrosine | 100 mg | |
Taurine | 100 mg | |
L-Theanine | 50 mg | |
Bioperine Nature's Thermonutrient | 5 mg |
GABA · 250 mg OverallScore79
A serving provides 250 mg of GABA, and the whole-product serving cost is moderate. The production method is not specified. The Other Ingredients panel includes a flow agent, but its name is unavailable.
How this ingredient is rated
Active Ingredient Quality & Bioavailability70
The label names GABA without a specific branded source.
GABA Source & Production Method
The label names GABA without a specific branded source.
Dose, Safety & Label Transparency93
A serving lists 250 mg of GABA. The Other Ingredients panel includes a flow agent, but its name is unavailable.
GABA Dosage Adequacy & Transparency
A serving lists 250 mg of GABA.
Label Purity & Excipient Quality
The Other Ingredients panel includes a flow agent, but its name is unavailable.
Value70
The whole-product cost per serving is moderate.
Price per Effective Dose
The whole-product cost per serving is moderate.
Theanine · 50 mg OverallScore76
50 mg of L-theanine per serving comes at a moderate cost per 100 mg. That amount may offer mild support. No branded source or additional purity claim is indicated.
How this ingredient is rated
Active Ingredient Quality & Bioavailability80
It uses L-theanine, the form associated with calming and focus. No branded source or additional purity claim is indicated.
Isomer Specificity (L-Theanine)
It uses L-theanine, the form associated with calming and focus.
Branded Forms & Purity Standards
No branded source or additional purity claim is indicated.
Dose, Safety & Label Transparency86
A serving provides 50 mg of L-theanine. That amount may offer mild support. The amount and source are individually stated.
Theanine Dosage Efficacy
A serving provides 50 mg of L-theanine. That amount may offer mild support.
Label Transparency & Blends
The amount and source are individually stated.
Value50
The cost per 100 mg of theanine is moderate.
Price per 100mg L-Theanine
The cost per 100 mg of theanine is moderate.
Glycine · 250 mg OverallScore24
Each serving provides 250 mg of glycine, a small amount, and glycine is expensive per gram. Its grade and purity certification are not established in the available information. Ordinary capsule or tablet ingredients are reported.
How this ingredient is rated
Active Ingredient Quality & Bioavailability0
Its grade and purity certification are not established in the available information.
Glycine Sourcing and Purity Standards
Its grade and purity certification are not established in the available information.
Dose, Safety & Label Transparency46
The label gives the glycine amount per serving. Ordinary capsule or tablet ingredients are reported.
Clinically Relevant Dosage
A serving supplies 250 mg of glycine, a small amount.
Label Transparency and Yield Disclosure
The glycine amount is explicitly listed.
Clean Label and Excipient Quality
Ordinary capsule or tablet ingredients are reported.
Value30
The cost per gram of glycine is high.
Cost Efficiency per 1,000mg of Glycine
The cost per gram of glycine is high.
Alternative products
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Safety and Efficacy of Gamma-Aminobutyric Acid from Fermented Rice Germ in Patients with Insomnia Symptoms: A Randomized, Double-Blind Trial.
- Analysis of the Effects of Known Sleep-Support Supplements in Relation to Life Habits, Sleep Conditions, and Sleep Problems.
- Reduced γ-aminobutyric acid in occipital and anterior cingulate cortices in primary insomnia: a link to major depressive disorder?
- GABA Supplementation, Increased Heart-Rate Variability, Emotional Response, Sleep Efficiency and Reduced Depression in Sedentary Overweight Women Undergoing Physical Exercise: Placebo-Controlled, Randomized Clinical Trial.
- The effect of glycine administration on the characteristics of physiological systems in human adults: A systematic review.
- New therapeutic strategy for amino acid medicine: glycine improves the quality of sleep.
- The effects of glycine on subjective daytime performance in partially sleep-restricted healthy volunteers.
- Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
- 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.
- The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis.
- In Search of a Safe Natural Sleep Aid.
- L-theanine in the adjunctive treatment of generalized anxiety disorder: A double-blind, randomised, placebo-controlled trial.
- Oral intake of γ-aminobutyric acid affects mood and activities of central nervous system during stressed condition induced by mental tasks.
- Relieving occupational fatigue by consumption of a beverage containing γ-amino butyric acid.
- Cortical gamma-aminobutyric acid and glutamate in posttraumatic stress disorder and their relationships to self-reported sleep quality.
- 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.
- Oral supplementation with glycine reduces oxidative stress in patients with metabolic syndrome, improving their systolic blood pressure.
- Protective and therapeutic effectiveness of taurine supplementation plus low calorie diet on metabolic parameters and endothelial markers in patients with diabetes mellitus: a randomized, clinical trial.
- Effects of taurine supplementation on VDT work induced visual stress.
- Taurine supplementation attenuates delayed increase in exercise-induced arterial stiffness.