Chewable GABA

Chewable GABA

NOW4.6 (4,862 ratings)
Format:Tablet Quantity: 90 Tablet(s) · 45 servings
Goals

Product analysis

48 out of 100

Chewable GABA may help responses to short-term stressful situations, although evidence for lasting everyday relief is limited.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

The main ingredient descriptions lack specific form details. That limits close comparisons with preparations used for particular calming or sleep purposes.

Ingredient Transparency63

All listed amounts are disclosed, making serving sizes easier to compare. Ingredient forms remain unspecified in the main descriptions, limiting closer preparation comparisons.

Value For Money36

The GABA comparison offers modest value, while the formula is relatively costly for its theanine content. Value for the remaining ingredients is uncertain.

Customer Satisfaction86

Customer ratings are favorable across a large review pool. The feedback does not establish lasting stress relief or improved mood and sleep.

Product Focus64

GABA provides the main connection to short-term calming, with limited evidence for lasting relief. The small accompanying amounts leave mood and sleep benefits less certain.

Format
Tablet
Container
90 Tablet(s)
Per serving
$0.30
Customer rating
4.6 · 4,862 ratings
Report analysis

Goals

Stress Relief
Impact
Highest effect
A+ Ingredient FitC PathwaysA EvidenceA+ Formulation Logic
GABA · 500 mgTheanine · 20 mg

GABA may help responses to short-term stressful tasks, but the evidence is limited and does not establish sustained stress relief from supplements. The 500 mg per serving meets the supplied amount comparison. Theanine is present in a much smaller amount than the supplied stress guidance, so it does not add a meaningful contribution to these findings. The serving does not itself establish a repeated daily regimen.

How this product is rated for Stress Relief

Ingredient fit96

GABA provides the main stress-related focus. The known amounts provide a partial overall match to the supplied comparisons; meeting them does not establish a clinical effect.
Goal fit
GABA provides the main stress-related focus.
Dose adequacy
The known amounts provide a partial overall match to the supplied comparisons; meeting them does not establish a clinical effect.

Pathways60

The findings span calming; this breadth does not demonstrate additional benefit from combining ingredients.
Depth
The strongest saved connection concerns calming; this describes the relevant role rather than proving relief from stress.
Breadth
The findings span calming; this breadth does not demonstrate additional benefit from combining ingredients.

Evidence91

GABA’s supporting findings concern short-term task stress and do not establish sustained supplement benefit.
Evidence strength
GABA’s supporting findings concern short-term task stress and do not establish sustained supplement benefit.
Studied preparation
The saved findings recognize the declared preparations; this does not make every ingredient independently proven for stress relief.

Formulation logic100

The recognized ingredients work alone or have the partners needed for their retained contribution. No configured ingredient conflict was identified in the supplied facts.
Partner coverage
The recognized ingredients work alone or have the partners needed for their retained contribution.
Conflicts
No configured ingredient conflict was identified in the supplied facts.
Effective doses
GABA meets the amount threshold; theanine and taurine are too small in the supplied comparison.
Study evidence
GABA Supportive 6 studies
Taurine Supportive 5 studies
Theanine Supportive 16 studies
Mood Support
Impact
Moderate effect
A+ Ingredient FitF PathwaysD+ EvidenceA+ Formulation Logic

Theanine may ease tension associated with stress, but the 20 mg serving is below the 200 mg amount associated with that effect. GABA is also present, although its role as a calming messenger doesn't tell us whether swallowing it improves everyday mood. The two ingredients therefore leave considerable uncertainty about how much emotional benefit to expect.

How this product is rated for Mood Support

Ingredient fit96

Theanine may ease stress-related tension; a lasting mood improvement is unclear.
Goal fit
Several ingredients have mood-related roles, alongside ingredients serving other purposes.
Dose adequacy
Theanine: 20 mg per serving; GABA: 500 mg per serving; Inositol: 80 mg per serving; Taurine: 100 mg per serving

Pathways17

The ingredients relate to neural calming. A role in these processes does not guarantee an emotional benefit.
Depth
The strongest ingredient connection concerns neural calming, without guaranteeing a mood benefit.
Breadth
The ingredients have limited connections with mood-related processes; this does not predict how much you will benefit.

Evidence53

Theanine may ease stress-related tension; a lasting mood improvement is unclear.
Evidence strength
Theanine may ease stress-related tension; a lasting mood improvement is unclear.
Studied preparation
The declared preparations do not remove the limitations on who may benefit from these ingredients.

Formulation logic100

No particular ingredient conflict is identified, and no additional partner is required for the ingredients described here.
Partner coverage
No additional ingredient partner is required for the ingredients described here.
Conflicts
No particular conflict between the declared ingredients is identified.
Effective doses
The declared amounts allow an ingredient comparison, but do not guarantee effective mood relief.
Study evidence
GABA Supportive 12 studies
Theanine Supportive 12 studies
Sleep Support
Impact
Moderate effect
B+ Ingredient FitF PathwaysD+ EvidenceA+ Formulation Logic
Theanine · 20 mg

GABA may offer calming support, but its contribution to sleep is less clear than its presence in the formula might suggest. The theanine and taurine amounts are too small to add a clear sleep role alongside it.

This blend is centered on GABA rather than sleep timing, and the product does not identify a specific GABA preparation tied to the sleep context. Inositol is also listed, but no sleep benefit is established for it here.

How this product is rated for Sleep Support

Ingredient fit82

GABA is the main active with a possible calming role; the listed theanine and taurine amounts are too small to contribute much.
Goal fit
GABA is the primary sleep-related ingredient; inositol has no established sleep role here.
Dose adequacy
GABA is 500 mg per serving, while theanine at 20 mg and taurine at 100 mg are too low to add a clear sleep contribution.

Pathways12

The formula is focused on calming and does not add sleep timing or other distinct sleep roles.
Depth
The product's clearest possible contribution is calming through GABA.
Breadth
No separate sleep-timing or nutrient-related sleep role is represented.

Evidence51

GABA has limited sleep-related context; the smaller theanine and taurine amounts do not clarify its role.
Evidence strength
GABA's possible sleep contribution is limited and remains uncertain.
Studied preparation
The product does not identify a GABA preparation that resolves the uncertainty about its sleep role.

Formulation logic100

GABA is the only meaningful sleep-related active, with no stimulant conflict or required partner.
Partner coverage
GABA is treated as a stand-alone calming ingredient; no second active is required.
Conflicts
No listed caffeine or other bedtime stimulant is identified.
Effective doses
GABA is present at 500 mg; the smaller theanine and taurine amounts do not add a clear contribution.
Study evidence
GABA Supportive 4 studies
Taurine Not classified

No linked studies yet.

Theanine Supportive 8 studies

Ingredients

IngredientAmount per servingScore
Calories
15 Calorie(s)
Total Carbohydrates
4 Gram(s)
GABA
500 mg 73
Taurine
100 mg 46
Inositol
80 mg
L-Theanine
20 mg 56
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
GABA · 500 mg OverallScore73
B- Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyD- Value
A serving provides 500 mg of GABA, a substantial listed amount. The whole-product serving costs about $0.31, and the saved information identifies no specific source or brand.
How this ingredient is rated

Active Ingredient Quality & Bioavailability70

The saved information identifies generic GABA without a specific source or brand.
GABA Source & Production Method
The saved information identifies generic GABA without a specific source or brand.

Dose, Safety & Label Transparency93

The GABA amount is listed as 500 mg per serving. The stored ingredients include at least one processing or flow ingredient covered by the check.
GABA Dosage Adequacy & Transparency
The serving lists 500 mg of GABA, a substantial listed amount.
Label Purity & Excipient Quality
The stored ingredients include at least one processing or flow ingredient covered by the check.

Value40

A whole-product serving costs about $0.31 and provides 500 mg of GABA.
Price per Effective Dose
A whole-product serving containing 500 mg of GABA costs about $0.31.
Theanine · 20 mg OverallScore56
B+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value
Each serving provides 20 mg of L-theanine, a comparatively small amount. The cost works out to about $1.54 per 100 mg of L-theanine, based on the whole-product price.
How this ingredient is rated

Active Ingredient Quality & Bioavailability80

The ingredient is identified as L-theanine; the saved facts provide no evidence of a branded source or an additional purity claim.
Isomer Specificity (L-Theanine)
The ingredient is specifically identified as L-theanine.
Branded Forms & Purity Standards
The saved facts provide no evidence of a branded source or an additional purity claim.

Dose, Safety & Label Transparency51

The 20 mg of L-theanine per serving is a comparatively small amount. The amount and source are individually disclosed.
Theanine Dosage Efficacy
The 20 mg of L-theanine per serving is a comparatively small amount.
Label Transparency & Blends
The label information identifies the source and lists 20 mg of L-theanine per serving.

Value20

The whole-product cost works out to about $1.54 per 100 mg of L-theanine, based on the whole-product price.
Price per 100mg L-Theanine
The whole-product cost works out to about $1.54 per 100 mg of L-theanine, based on the whole-product price.
Taurine · 100 mg OverallScore46
D+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value
A serving provides a small 100 mg of taurine. At the whole-product price, that works out to about $3.09 per gram of taurine.
How this ingredient is rated

Active Ingredient Quality & Bioavailability51

Taurine is named, with source and formulation details limited to the saved facts.
Chemical Form and Purity
The ingredient is identified as taurine; the saved facts do not establish L-taurine or free-form wording.
Sourcing and Branded Ingredients
The saved facts do not establish a branded taurine source or an origin claim.
Formulation Cleanliness
The evaluation records a standard flow agent among the other ingredients.

Dose, Safety & Label Transparency54

The serving amount is specified as 100 mg of taurine.
Taurine Dosage Potency
A serving supplies a small 100 mg of taurine.
Dose Disclosure
The amount of taurine is stated per serving: 100 mg.
Quality Assurance and Testing
A testing or GMP claim is recorded, but no specific independent certification seal is established.

Value20

The whole-product cost per gram of taurine is relatively high in the evaluation.
Price per Gram of Taurine
At the whole-product price, the cost is about $3.09 per gram of taurine.
Report alternatives

Sources

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

  1. Oral intake of γ-aminobutyric acid affects mood and activities of central nervous system during stressed condition induced by mental tasks.
    Yoto A; Murao S; Motoki M; Yokoyama Y; Horie N; Takeshima K; Masuda K; Kim M; Yokogoshi H · Amino acids · 2012
    Randomized trial63 participantsMood Support Stress Relief forGABA
  2. Peripartum neuroactive steroid and γ-aminobutyric acid profiles in women at-risk for postpartum depression.
    Deligiannidis KM; Kroll-Desrosiers AR; Mo S; Nguyen HP; Svenson A; Jaitly N; Hall JE; Barton BA; Rothschild AJ; Shaffer SA · Psychoneuroendocrinology · 2017
    Cohort study56 participantsMood Support forGABA
  3. The role of neurotransmitters in mediating the relationship between brain alterations and depressive symptoms in patients with inflammatory bowel disease.
    Wang J; Liu G; Xu K; Ai K; Huang W; Zhang J · Human brain mapping · 2023
    Case-control study69 participantsMood Support forGABA
  4. Occipital gamma-aminobutyric acid and glutamate-glutamine alterations in major depressive disorder: An mrs study and meta-analysis.
    Truong V; Cheng PZ; Lee HC; Lane TJ; Hsu TY; Duncan NW · Psychiatry research. Neuroimaging · 2021
    Observational studyMood Support forGABA
  5. Systematic review of gamma-aminobutyric-acid inhibitory deficits across the reproductive life cycle.
    Vigod SN; Strasburg K; Daskalakis ZJ; Blumberger DM · Archives of women's mental health · 2014
    Systematic review11 studies pooledMood Support forGABA
  6. 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
  7. 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
  8. 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 pooledMood Support forTheanine
  9. 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 Stress Relief forGABA
  10. 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
  11. Safety and Efficacy of Gamma-Aminobutyric Acid from Fermented Rice Germ in Patients with Insomnia Symptoms: A Randomized, Double-Blind Trial.
    Byun JI; Shin YY; Chung SE; Shin WC · Journal of clinical neurology (Seoul, Korea) · 2020
    Randomized trial40 participantsSleep Support forGABA
  12. Analysis of the Effects of Known Sleep-Support Supplements in Relation to Life Habits, Sleep Conditions, and Sleep Problems.
    Imafuku F; Yamamoto K; Tanaka E; Aoki R; Nishino S · Nutrients · 2023
    Randomized trial160 participantsSleep Support forGABA
  13. Reduced γ-aminobutyric acid in occipital and anterior cingulate cortices in primary insomnia: a link to major depressive disorder?
    Plante DT; Jensen JE; Schoerning L; Winkelman JW · Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2012
    Case-control study40 participantsSleep Support forGABA
  14. 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.
    Guimarães AP; Seidel H; Pires LVM; Trindade CO; Baleeiro RDS; Souza PM; Silva FGDE; Coelho DB; Becker LK; Oliveira EC · Journal of dietary supplements · 2024
    Randomized trial30 participantsSleep Support Stress Relief forGABA
  15. 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 participantsSleep Support forTheanine
  16. 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
  17. 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
  18. 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
  19. 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 participantsSleep Support forTheanine
  20. Relieving occupational fatigue by consumption of a beverage containing γ-amino butyric acid.
    Kanehira T; Nakamura Y; Nakamura K; Horie K; Horie N; Furugori K; Sauchi Y; Yokogoshi H · Journal of nutritional science and vitaminology · 2011
    Clinical trial30 participantsStress Relief forGABA