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GABA 250 mg

Kirkman
4.8
★ ★ ★ ★ ★
(2048 ratings)
GABA 250 mg
Product Image
Score78
The clearly disclosed 250 mg serving is focused and practical, though ordinary oral GABA has inconsistent real-world effects.
How scoring works
Quantity:150 Capsule(s) • (150 servings)
Goals:
Sleep Support
Stress Relief
Mood Support

Score 78

The clearly disclosed 250 mg serving is focused and practical, though ordinary oral GABA has inconsistent real-world effects.
How scoring works
$30.00($0.20 per serving)
iHerb
$ 31.50
Pure Formulas
$ 31.50
Amazon
$ 30.00
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Analysis

250 mg sits within a practical standalone range for a product aimed at relaxation, stress, or sleep support. Oral GABA targets an inhibitory pathway, but its ability to reach the brain reliably remains uncertain.

Capsule delivery is simple and provides a fixed serving. The single-active design is easy to assess and avoids unrelated ingredients.

The supply and serving cost provide good practical value. The formula is better suited to situational calming than to broad mood support or circadian sleep timing.

Who is it for
  • Adults seeking a simple calming supplement
  • Users who prefer capsule delivery
Best for
  • Situational relaxation support
  • A focused single-pathway formula

Pros

  • Clearly disclosed 250 mg amount
  • Focused active-ingredient list
  • Large one-hundred-fifty-serving supply

Cons

  • Ordinary oral GABA has uncertain brain delivery
  • No branded fermented source
  • Does not address circadian timing

Warnings

  • GABA may cause drowsiness; do not drive or operate machinery until its effects are known.
  • Alcohol, sleep medicines, sedating antihistamines, and other sedatives may intensify impaired alertness.
  • GABA may lower blood pressure in some users; monitor for dizziness when using blood-pressure medicine.

Nutrient quality

79 High impact

Conventional oral delivery does not overcome the main uncertainty about how much ordinary GABA reaches the brain. lower practical falls within a practical standalone range.

Ingredient transparency

81 Highest impact

The GABA amount is clearly disclosed. Excipients and daily directions are absent from the supplied data, which leaves some label details uncertain.

Customer satisfaction

71 High impact

The aggregate satisfaction average is strong, though no detailed feedback is supplied. The large volume provides a stable aggregate satisfaction signal.

Value for money

78 High impact

A clear, practical amount supports good formula value despite generic sourcing. The serving cost is moderate for the lower disclosed amount.

Report analysis

Goals

Sleep Support
Sleep Support
Impact
High effect
C Goal FitA- Strength of SupportC- CoverageA+ Formula Quality

GABA is an inhibitory neurotransmitter associated with relaxation, and the 250 mg amount falls within a practical stand-alone range. The label is simple and fully discloses the active amount.

Evidence that ordinary oral GABA reliably reaches the brain and improves sleep remains limited, so effects may vary. It may still cause drowsiness, especially with alcohol, sleep medicines, antihistamines, or other sedatives, so driving after use is unwise.

Study evidence
GABA Supportive 4 studies
Stress Relief
Stress Relief
Impact
High effect
C+ Goal FitB Strength of SupportD+ CoverageA+ Formula Quality
GABA · 250 mg

GABA at 250 mg directly targets inhibitory signaling associated with calm and reduced nervous-system arousal. The single-capsule amount is meaningful and clearly disclosed.

Human evidence for standard oral GABA crossing into the brain and consistently reducing stress remains mixed. It may cause sleepiness in sensitive users, especially with alcohol or other sedating products.

Study evidence
GABA Supportive 6 studies
Mood Support
Mood Support
Impact
Moderate effect
F Goal FitA- Strength of SupportF CoverageA- Formula Quality

GABA is directly associated with calming signaling, but ordinary oral GABA has limited ability to reach the brain. The formula may suit short-term relaxation better than broad or sustained mood support.

The active amount is clearly disclosed and falls within a practical standalone range. A single-ingredient capsule keeps the formula simple, though no enhanced delivery method is identified.

Study evidence
GABA Supportive 12 studies

Ingredients

IngredientAmount per serving
GABA
250 mg
Gluten Free Adults 18–50 Dairy Free
Report overview
GABA · 250 mg OverallScore82
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB- Value
The single-ingredient capsule provides a clearly stated GABA dose within the preferred standalone range. Its standard source lacks a branded fermentation advantage, but capsule delivery is practical and dependable. The moderate serving cost supports reasonable value for the active amount.
View ingredientView products
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85 Performance

Pharma GABA 250 mg

Natural Factors Stress-Relax
<p>A meaningful amount of fermented branded GABA provides well-defined, focused relaxation support. Compared with the original, the fermented branded source provides clearer source definition; the defined source improves quality confidence, although individual response to oral GABA may still vary.</p>
79 Performance

PharmaGABA Chewables

Designs for Health
<p>Branded fermented GABA and a well-targeted amount provide focused relaxation support. Compared with the original, the fermented branded source provides clearer source definition; the defined source improves quality confidence, although individual response to oral GABA may still vary.</p>
77 Performance

Liposomal GABA

Quicksilver Scientific
<p>Liposomal delivery plus L-theanine creates a technically strong and coherent calming formula. Compared with the original, liposomal delivery and L-theanine provide a broader calming design; the supplied feedback and high serving cost still weaken value confidence.</p>
86 Budget

GABA

NOW
<p>A substantial GABA amount in flexible liquid form provides highly economical relaxation support. The lower serving cost improves value compared with the original; its higher amount may increase drowsiness, while ordinary oral GABA still has uncertain brain availability.</p>
81 Budget

GABA 750 mg

Source Naturals Serene Science
<p>A clearly disclosed upper-range GABA amount provides focused calming support in a simple formula, but ordinary oral GABA has uncertain access to the brain and human effects vary. The lower serving cost improves value compared with the original; its higher amount may increase drowsiness, while ordinary oral GABA still has uncertain brain availability.</p>
83 Budget

GABA 500 mg

Nutricost
<p>A clearly disclosed well-centered GABA amount provides focused calming support in a simple formula, but ordinary oral GABA has uncertain access to the brain and human effects vary. The lower serving cost improves value compared with the original; its higher amount may increase drowsiness, while ordinary oral GABA still has uncertain brain availability.</p>
89 Value

GABA Powder

Source Naturals Serene Science
<p>The combination of a flexible 750 mg GABA serving and an economical serving creates better practical value than the original. The larger amount may cause drowsiness, especially alongside alcohol or other sedating products.</p>
88 Value

GABA 500 mg

Swanson
<p>The combination of clearly disclosed 500 mg GABA and an economical serving creates better practical value than the original. Ordinary oral GABA has uncertain access to the brain, so individual effects may vary.</p>
87 Value

GABA 750 mg

NOW
<p>The combination of clearly disclosed 750 mg GABA and an economical serving creates better practical value than the original. The larger amount may cause drowsiness, especially alongside alcohol or other sedating products.</p>
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Sources

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

  1. 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
  2. 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
  3. 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 participantsStress Relief Mood Support forGABA
  4. 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 participantsStress Relief Sleep Support forGABA
  5. 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
  6. The impact of matching for reproductive status on the comparison of magnetic spectroscopic measurements of glutamate and gamma-aminobutyric acid + in the medial prefrontal cortex of women with major depression.
    Tran KH; Luki J; Hanstock S; Hanstock CC; Seres P; Aitchison K; Shandro T; Le Melledo JM · Journal of affective disorders · 2024
    Case-control study48 participantsMood Support forGABA
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. Cortical gamma-aminobutyric acid and glutamate in posttraumatic stress disorder and their relationships to self-reported sleep quality.
    Meyerhoff DJ; Mon A; Metzler T; Neylan TC · Sleep · 2014
    Case-control study45 participantsStress Relief forGABA
  13. 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 participantsStress Relief forGABA