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Liposomal GABA

Quicksilver Scientific
3.8
★ ★ ★ ★ ★
(12 ratings)
GABA 240 mg
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Score74
A focused liposomal GABA product delivering 240 mg in a measured liquid. The supplied data do not verify that liposomal delivery improves the practical effect.
How scoring works
Quantity:1 Fluid Ounce(s) • (25 servings)
Goals:
Stress Relief
Sleep Support

Score 74

A focused liposomal GABA product delivering 240 mg in a measured liquid. The supplied data do not verify that liposomal delivery improves the practical effect.
How scoring works
$37.00($1.48 per serving)
Pure Formulas
$ 37.00
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Analysis

The measured liquid supplies 240 mg of liposomal GABA. The formula also has 100 mg of L-theanine and 134 mg of sunflower phosphatidylcholine.

GABA and L-theanine provide complementary calming pathways, while phosphatidylcholine forms the delivery system. The combination may suit evening relaxation, but it does not guarantee a stronger result than simpler oral products.

The main limitation is that the supplied data do not verify that liposomal delivery improves the practical effect. The product fits adults wanting GABA paired with L-theanine in a liquid, provided sedative stacking and next-day drowsiness are considered.

Who is it for
  • adults wanting GABA paired with L-theanine in a liquid
  • people seeking focused relaxation support without a multi-herb blend
Best for
  • evening relaxation
  • supporting a calmer bedtime routine

Pros

  • Clearly states 240 mg of GABA
  • Measured liquid is easy to use
  • Pairs GABA with 100 mg of L-theanine

Cons

  • The supplied data do not verify that liposomal delivery improves the practical effect
  • Oral GABA effects may differ substantially between users
  • Focused formula does not address broader causes of poor sleep or stress

Warnings

  • Measure the liquid with the supplied device rather than a household spoon.
  • GABA may cause drowsiness, dizziness, or reduced alertness.
  • Alcohol, sleep medicines, benzodiazepines, antihistamines, or other sedatives may intensify drowsiness when combined with GABA.

Nutrient quality

92 Highest impact

Liposomal phosphatidylcholine and L-theanine provide a differentiated delivery and support system. The GABA amount is meaningful for focused calming support, and gABA and L-theanine create complementary calming pathways in one focused formula.

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Ingredient transparency

85 Highest impact

Every listed active has a specific amount and no proprietary blend obscures the formula. Complete intake directions and inactive ingredients are not supplied, leaving part of the label unverified.

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Customer satisfaction

48 Lower impact

The supplied aggregate satisfaction level is weak. The very small feedback volume makes the aggregate uncertain.

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Value for money

59 Moderate impact

Advanced delivery does not fully justify the very high cost. The serving value is weak despite meaningful active amounts, and less expensive GABA and theanine combinations are likely to compare better.

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Goals

Stress Relief
Impact
Highest effect
B+ Goal FitA Strength of SupportB- CoverageA+ Formula Quality
GABA · 240 mgTheanine · 100 mg

GABA and L-theanine provide complementary inhibitory and calm-attention support. The liposomal phosphatidylcholine delivery may improve contact and absorption compared with a plain capsule.

Theanine has better human stress evidence than oral GABA, whose access to the brain remains uncertain. The liquid may cause drowsiness in some users and should be tested when alertness is not critical.

Study evidence
GABA Supportive 6 studies
Theanine Supportive 16 studies
Sleep Support
Impact
Highest effect
B+ Goal FitA- Strength of SupportB CoverageA+ Formula Quality
Theanine · 100 mg

GABA and L-theanine directly target nervous-system relaxation without melatonin. The disclosed amounts are meaningful for a combined formula, and liposomal phosphatidylcholine may support delivery.

The formula is focused and free of stimulants or unrelated botanicals. It lacks circadian regulation and mineral support, so it works mainly through one calming pathway.

Study evidence
GABA Supportive 4 studies
Theanine Supportive 8 studies

Ingredients

IngredientAmount per serving
GABA
240 mg
L-Theanine
100 mg
Phosphatidylcholine (purified Sunflower seed Lecithin)
134 mg
Adults 18–50
Report overview
GABA · 240 mg OverallScore71
B+ Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyD- Value

The liposomal liquid uses sunflower-derived phosphatidylcholine to support delivery. Its GABA amount suits a complex formula, but the source is not identified as a premium fermented form. The very high serving cost weakens value despite the advanced format.

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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. 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
  3. 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
  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 participantsSleep Support Stress Relief forGABA
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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 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 Stress Relief forTheanine
  14. Anti-Stress, Behavioural and Magnetoencephalography Effects of an L-Theanine-Based Nutrient Drink: A Randomised, Double-Blind, Placebo-Controlled, Crossover Trial.
    White DJ; de Klerk S; Woods W; Gondalia S; Noonan C; Scholey AB · Nutrients · 2016
    Randomized trial34 participantsStress Relief forTheanine
  15. 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 participantsStress Relief forTheanine
  16. Safety and Efficacy of AlphaWave® L-Theanine Supplementation for 28 Days in Healthy Adults with Moderate Stress: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Moulin M; Crowley DC; Xiong L; Guthrie N; Lewis ED · Neurology and therapy · 2024
    Randomized trial30 participantsStress Relief forTheanine
  17. 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.
    Evans M; McDonald AC; Xiong L; Crowley DC; Guthrie N · Neurology and therapy · 2021
    Randomized trialStress Relief forTheanine