GABA
GABA (gamma-aminobutyric acid) is an amino acid that functions as the principal inhibitory neurotransmitter in the brain, meaning it reduces the activity of nerve cells. This inhibitory action helps to balance brain activity, preventing overstimulation and promoting a sense of calm. It is naturally produced in the brain from glutamic acid. As a dietary supplement, GABA is commonly taken to support relaxation, reduce feelings of stress and anxiety, and improve sleep quality. While some debate exists on its ability to cross the blood-brain barrier effectively when supplemented orally, many users report subjective benefits related to calmness and sleep. The mechanism of action for supplemental GABA is thought to involve interaction with GABA receptors, either directly or indirectly, potentially through the enteric nervous system or by influencing vagal nerve activity. It is often sought by individuals looking for natural support for mental tranquility and restful sleep.
Fermented foods (e.g., kimchi, yogurt, tempeh)Certain teas (e.g., green tea, black tea)Some fruits and vegetables (e.g., tomatoes, spinach, broccoli, sweet potatoes)Grains (e.g., rice, barley, oats)
Cheapest GABA supplements
Discover and compare the cheapest GABA supplements designed to support stress relief, sleep, and mood.
Best GABA supplements
Discover the best GABA supplements for natural stress relief, improved sleep, and enhanced mood support, helping you find the perfect non-nutrient, non-botanical option for your wellness goals.
Value GABA supplements
Discover value-packed GABA supplements to support stress relief, better sleep, and improved mood, helping you find the right option for your well-being needs.
Minimum100 mg
Maximum300 mg
Toxicity Threshold500 mg
Toxicity EffectDrowsiness, impaired coordination
Impact
High effect
Typical dose:100–750 mg
Supplementing with GABA can promote rapid feelings of relaxation and calm by reducing neuronal excitability. While its ability to cross the blood-brain barrier is debated, many users report a tangible felt effect in reducing acute feelings of anxiety and physical tension, likely through its influence on the enteric nervous system.
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Impact
Limited evidence
Typical dose:100–500 mg
While GABA is the brain's primary inhibitory neurotransmitter, supplemental GABA struggles to pass from the bloodstream into the brain. Any perceived calming effects are likely mediated by the enteric nervous system in the gut rather than direct central nervous system activity.
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Impact
Limited evidence
Typical dose:200–750 mg
GABA is the brain's primary inhibitory neurotransmitter, crucial for calming neural activity. However, when taken as a supplement, its molecular structure significantly limits its ability to cross the blood-brain barrier. Any perceived calming effects may be attributable to its action on the enteric nervous system or a placebo response, rather than a direct central nervous system effect.
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add_circle_outline Positive Interactions
Melatonin
Both support sleep and relaxation; combining them may enhance sedative effects.
Theanine
Both promote relaxation and calm, potentially offering synergistic calming effects.
Magnesium
Magnesium is a cofactor for enzymes involved in GABA synthesis and can enhance GABA's effects.
Vitamin B6
Vitamin B6 is essential for the enzymatic conversion of glutamate to GABA in the brain.
Taurine
Taurine can act on GABA receptors and enhance GABAergic activity, promoting relaxation.
Valerian
Valerian is traditionally used for relaxation and sleep, partly by influencing GABA pathways.
Ashwagandha
Both are adaptogens that promote relaxation and reduce stress, potentially enhancing overall calming effects.
Glutamine
Glutamine is a precursor to glutamate, which is then converted to GABA, potentially supporting GABA production.
remove_circle_outline Negative Interactions
Caffeine
Caffeine is a stimulant that can counteract the relaxing and sedative effects of GABA.
St. John's Wort
St. John's Wort can affect neurotransmitter systems and might have unpredictable interactions with GABA, potentially altering its efficacy or side effects.
Guarana
Contains caffeine and other stimulants, which would directly oppose the relaxing effects of GABA.
Rhodiola
An adaptogen often used for energy and focus, which could potentially diminish the sedative effects of GABA if taken for relaxation.
Eleuthero
May counteract GABA's sedative properties due to its energizing and adaptogenic effects.
82 Best 
RelaxMax
XYMOGEN
5.0
★★★★★
(1 ratings)
GABA: 100 mg
RelaxMax blends several calming ingredients like Myo-Inositol, Magnesium, Taurine, GABA, and L-Theanine to support relaxation and a tranquil state of mind, especially helpful for winding down.
85 Value 
GABA Powder
Source Naturals Serene Science
4.6
★★★★★
(657 ratings)
GABA: 750 mg
A high-dose (750mg) GABA powder from a well-known brand, offering flexible dosing and good value for consistent use.
90 Value 
GABA 500 mg Unflavored
Nutricost
4.7
★★★★★
(326 ratings)
GABA: 500 mg
An outstandingly economical unflavored GABA powder offering 500mg per serving, providing maximum dosing flexibility and long-term value.
80 Budget 
GABA Calm Orange Flavor
Source Naturals
4.7
★★★★★
(7 ratings)
GABA: 125 mg
An orange-flavored liquid blend combining GABA with several other calming nutrients, offering convenience and excellent value, but with limited specific customer feedback.
78 Value 
GABA 750 mg
Source Naturals
4.0
★★★★★
(9 ratings)
GABA: 750 mg
A cost-effective tablet delivering 750mg of standard GABA per serving, aimed at basic support for stress, sleep, and mood.
85 Best 
Best-Rest Formula
Pure Encapsulations
3.8
★★★★★
(20 ratings)
GABA: 300 mg
This is a multi-ingredient blend designed to support sleep, mood, and stress relief through a combination of calming herbs, GABA, L-Theanine, and melatonin.
82 Best 
Insomnitol
Designs for Health
4.7
★★★★★
(41 ratings)
GABA: 100 mg
This formula provides a broad spectrum of relaxation and sleep-supporting ingredients, featuring several well-known botanicals and neurotransmitter aids to help with restful sleep.
82 Best 
Anxiety Control Plus
Metabolic Maintenance
4.7
★★★★★
(404 ratings)
GABA: 400 mg
A well-rounded supplement featuring magnesium, GABA, glycine, and calming herbs designed to support relaxation and a balanced mood.
88 Value 
GABA 500 mg
Nutricost
4.8
★★★★★
(984 ratings)
GABA: 500 mg
An extremely economical 500mg standard GABA capsule with Vitamin B6, highly popular for long-term support for stress, sleep, and mood.
91 Value 
GABA 750 mg
AN Amazing Nutrition Amazing Formulas
4.4
★★★★★
(3280 ratings)
GABA: 750 mg
An outstandingly priced 750mg GABA vegetarian capsule with strong customer satisfaction, offering excellent value for potent calming support.
85 Budget 
Theanine Serene With Relora
Source Naturals
4.6
★★★★★
(32 ratings)
GABA: 500 mg
This product builds on the original Theanine Serene blend by adding Relora, an herbal complex often used to help manage stress and support a balanced mood.
82 Best 
MetaCalm
Metabolic Maintenance
4.6
★★★★★
(42 ratings)
GABA: 300 mg
MetaCalm is a comprehensive supplement featuring high-quality, bioavailable forms of vitamins and minerals, combined with synergistic compounds to support mood, stress relief, and cognitive function.
78 Budget 
Totally Zen
Carlson
4.7
★★★★★
(399 ratings)
GABA: 200 mg
This supplement combines L-Theanine and GABA for relaxation with a suite of B vitamins and magnesium to support nervous system health and daily calm.
84 Value 
GABA Gamma Aminobutyric Acid 250 mg
Swanson Premium Brand
4.7
★★★★★
(2346 ratings)
GABA: 250 mg
A highly economical and popular capsule supplement providing 250mg of standard GABA per serving, ideal for basic stress, sleep, and mood support.
75 Best 
GABA
Pure Encapsulations
4.7
★★★★★
(33 ratings)
GABA: 700 mg
A high-dose 700mg standard GABA capsule from Pure Encapsulations, offering substantial support for stress, sleep, and mood.
75 Budget 
GABA 750 mg
Source Naturals
4.7
★★★★★
(13 ratings)
GABA: 750 mg
An economical 750mg standard GABA tablet from Source Naturals, providing basic support for stress, sleep, and mood.
94 Value 
GABA 500 mg
NOW
4.7
★★★★★
(81222 ratings)
GABA: 500 mg
An exceptionally affordable 500mg GABA capsule with Vitamin B6, from a trusted brand with outstanding customer satisfaction and value.
75 Budget 
NutraSleep
Source Naturals
4.7
★★★★★
(3 ratings)
GABA: 600 mg
NutraSleep is a tablet-based blend offering comprehensive support for sleep, mood, and stress relief, featuring a mix of calming herbs, GABA, Taurine, Inositol, and essential minerals like Magnesium and Calcium.
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NightRest With Melatonin
Source Naturals
4.5
★★★★★
(5135 ratings)
GABA: 500 mg
This product provides a multi-ingredient approach to support nighttime relaxation and sleep, combining melatonin with calming amino acids and traditional herbal extracts for a comprehensive effect.
78 Best 
Theanine Serene
Source Naturals
4.7
★★★★★
(1139 ratings)
GABA: 500 mg
This formula combines L-Theanine, GABA, Taurine, Magnesium, and Holy Basil to support relaxation, a balanced mood, and restful sleep without significant drowsiness.
72 Best 
PharmaGABA Chewables
Designs for Health
4.7
★★★★★
(77 ratings)
GABA: 200 mg
This is a chewable PharmaGABA supplement providing 200mg per serving, aimed at individuals seeking simple support for stress, sleep, and mood.
65 Best 
GABA-T SAP
NFH
5.0
★★★★★
(1 ratings)
GABA: 300 mg
A milder combination of GABA and L-Theanine, potentially suitable for those seeking lower doses, though broad customer feedback is limited.
78 Budget 
GABA Calm Peppermint Flavor
Source Naturals
4.5
★★★★★
(2 ratings)
GABA: 125 mg
A peppermint-flavored liquid blend combining GABA with several other calming nutrients, offering convenience and good value, but with minimal customer feedback.
95 Value 
GABA 750 mg
Source Naturals Serene Science
4.4
★★★★★
(2848 ratings)
GABA: 750 mg
An incredibly affordable 750mg GABA tablet from a trusted brand, offering exceptional value and strong customer satisfaction for powerful calming support.
94 Value 
GABA 500 mg
NOW
4.7
★★★★★
(81359 ratings)
GABA: 500 mg
An exceptionally affordable 500mg GABA capsule with Vitamin B6, from a trusted brand with outstanding customer satisfaction and value.
78 Best 
Emotional Wellness
Pure Encapsulations
4.9
★★★★★
(8 ratings)
GABA: 200 mg
This blend offers a comprehensive approach to emotional wellness, combining adaptogens, neurotransmitter precursors, and calming herbs for mood, stress, and cognitive support.
80 Value 
GABA 750 mg
Best Naturals
4.9
★★★★★
(35 ratings)
GABA: 750 mg
An economical Vcap option providing a strong 750mg dose of GABA, suitable for budget-conscious users seeking higher potency.
Average$26.22
Median$20.99
Average$0.64
Median$0.45