Thorne PharmaGABA-100 Review
THORNE PharmaGABA-100 is a 100 mg Gamma-Aminobutyric Acid (GABA) supplement sold as 60 capsules in a bottle. The listing describes it as unflavored, with item form capsule, dosage form capsule, and a primary supplement type of Gamma-Aminobutyric Acid (GABA). The item highlights read: Supports Relaxation, Mental Focus & Restful Sleep, Natural-Source GABA, Non-Habit-Forming, NSF Contents Certified. The product benefits are listed as Emotional Wellness and Sleep Support, and the age range is given as Adult. The item is listed as vegetarian under materials and care. The allergen information states it is dairy free, egg free, fish free, peanut free, shellfish free, soy free, and tree nut free. The 'About this item' section makes several points. It describes GABA as an important brain chemical that acts like a brake during times of runaway stress. It says the product promotes a calm, relaxed, focused state of mind and supports restful sleep. The page makes a clinical research claim that natural-source GABA outperforms synthetic GABA in clinical studies. It also states that Thorne is trusted by 100+ professional sports teams and is described as the #1 most recommended clinical brand by consumers and health-care practitioners, based on a 2026 independent survey of US supplement consumers and health-care practitioners as cited on the page. Product specifications listed on the page include a unit count of 60 count, an item weight of 1.6 ounces, item dimensions of 2.09 x 2.09 x 3.72 inches, one item in the package, and 60 total servings per container. The manufacturer is listed as Thorne Research, the model number is SP652, and the manufacturer part number is SP652-R. The UPC is listed as 693749652014 and the Global Trade Identification Number as 00693749652014. The model name field reads e PharmaGABA-100 - GABA Supplement - 100 mg Natural Source Gamma-Aminobutyric Acid - Support a Calm State of Mind and Restful Sleep - 60 Capsules. Pricing on the page shows a one-time purchase price of $34.00, or $0.57 per count, sold by Pattern. and shipped by Amazon. A Subscribe and Save option lists $32.30 with 5 percent savings, and $30.60 with 10 percent savings on larger subscription sets. Returns are listed as non-returnable due to food safety reasons, with an exception for damaged or defective items. The page lists the product under Vitamins, Minerals and Supplements and Blended Vitamin and Mineral Supplements, with a Best Sellers Rank of #365 in Blended Vitamin and Mineral Supplements and #18,363 in Health and Household. Customer ratings are shown as 4.5 out of 5 stars from 1,008 ratings. The page shows 1K+ bought in past month. No star histogram breakdown or written customer review text is visible in this scraped page, so those fields are left empty here. Other offers listed include a new condition from three sellers starting at $33.30. Related items shown include other Thorne products such as PharmaGABA-250 and Magnesium Glycinate, plus competing GABA supplements from other brands.
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Study, Trial or Testing Result Summary
Members Only3 human studies · 2 improved
This product gives gamma-aminobutyric acid at 300 milligrams a day, above the 200 milligrams that worked in studies. In a 90-day placebo-controlled trial of 30 inactive women with overweight who were exercising, 200 milligrams daily improved sleep efficiency, reduced negative emotions, lowered depression scores and improved heart rhythm variability, a sign of calmer stress responses [1]. An older controlled study found it increased relaxed brain waves and lowered alert brain waves within 60 minutes in 13 people. In 8 people afraid of heights, it kept immune levels in saliva higher than placebo during a stressful bridge crossing [2]. A three-month trial in 42 women with premenstrual syndrome found no difference from placebo, but it tested a blend with herbs, vitamin B6 and melatonin, not this ingredient alone [3]. The studies were small, and the share of people who improved was not reported. Most buyers rate the product well and describe a gentle calming effect, though some found the 100 milligram capsule too weak. Animal and cell studies are never counted.
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- In 42 women with premenstrual syndrome, 3 months of a combination supplement containing GABA improved mood and antioxidant status within the supplement group, but showed no differences compared with placebo.Effects of the PREMEN-CALM® in the Management of the Premenstrual Syndrome: A Randomized, Double-Blind, Placebo-Controll…
- In 30 sedentary women with overweight or obesity who exercised, 200 mg of GABA daily for 90 days improved sleep efficiency, negative emotions, depression scores and heart rate variability compared with placebo.GABA Supplementation, Increased Heart-Rate Variability, Emotional Response, Sleep Efficiency and Reduced Depression in S…
- In 13 people, GABA raised relaxed brain waves and lowered alert brain waves within 60 minutes versus water or theanine, and in 8 people afraid of heights it kept saliva immune levels higher during a stressful bridge crossing than placebo.Relaxation and immunity enhancement effects of gamma-aminobutyric acid (GABA) administration in humans.
Review Totals and Summary
Members Only1,008 reviews · 88% positive
Customers on Vitacost, Walmart, Thorne's own site and professional-supplement retailers mostly praise the product's gentle calming effect. Many say it quiets an overactive mind and racing thoughts. One reviewer said it does not force sleep but slows the mind and sets up a bedtime routine. Others report falling asleep more easily and getting back to sleep after waking in the night. A smaller group uses it for daytime stress, shakiness and anxiety, and one reviewer said it also helped a little with ADHD symptoms. Several buyers take it with slow-release melatonin or 5-HTP. They say the combination gives them more consistent sleep and a calmer evening. Some also use it while recovering from long-term stress or adrenal fatigue. Brand trust is a second strong theme. Reviewers repeatedly say they chose Thorne because of its purity, clean formulas and lack of fillers. Many mention that a naturopath, functional-medicine doctor or Oriental medicine practitioner recommended it. They like that it uses fermented, natural-source PharmaGABA. Many believe it is more bioavailable and more potent than ordinary GABA, and some think it is the only GABA that crosses the blood–brain barrier. Several reviewers say it works at the lower 100 mg dose when other GABA products had done little. People with food sensitivities like that it is allergen-free, and they call the formula gentle. Criticism is much less common. The main complaint is that 100 mg can be too low. A few people said it did nothing for them, or that they needed a higher dose or the 250 mg version. One reviewer was disappointed that a respected brand did not work for them, so results are not universal. Some other reviewers took the low strength as a good starting point for people who are cautious about dosing. Since many reviews are one-line endorsements, there is little detail on side effects, and few negative experiences are described. Overall, buyers see it as a clean, well-made, gentle product for winding down and easing stress. Its effects are subtle and vary from person to person, and it works best for some people when combined with other sleep habits or supplements.
Biohacker Summary
Members Only2 of 10 recommend it
Only two of the ten panelists spoke about gamma-aminobutyric acid (GABA), the main ingredient, so this is a thin picture. One of them has used a GABA supplement for sleep and recommends it for adrenal fatigue and for cravings tied to artificial sweeteners, suggesting it be taken before bed or 30 to 60 minutes before eating. He also mentions it in a capsule blend meant to ease food cravings and anxiety, though his latest position is neutral. The other panelist stayed neutral, describing GABA as something the body makes that supports relaxation, focus and clarity, and noting that theanine and ginseng may help raise it. Neither gave a dose, a preferred form beyond capsules, a caution, or a report of stopping.
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Ben Greenfield · Gamma-Aminobutyric Acid · neutral
- Discusses how the gut-brain axis connects to mood, neurotransmitters like gamma-aminobutyric acid (GABA), and behavioral shifts.
- Usually uses a GABA-based supplement, which contains gamma-aminobutyric acid, an inhibitory neurotransmitter, for sleep.
- Recommends GABA (gamma-aminobutyric acid) as a good supplement to take for adrenal fatigue, noting it's found in many sleep and recovery supplements.
- Ben recommends Gamma-AminoButyric Acid (GABA) as a supplement that can work well for addiction to artificial sweeteners, suggesting it can be taken as a pre-bedtime source or 30-60 minutes before eating.
- Ben Greenfield mentions gamma-Aminobutyric acid as part of a brain blend in capsule form, designed to prevent food cravings and decrease anxiety, with a sleep version also available.
Thomas DeLauer · Gamma-Aminobutyric Acid · neutral
- Notes that ginseng provides a big boost in gamma-aminobutyric acid (GABA), which helps one feel calm while energized.
- Mentions GABA (gamma-aminobutyric acid) and its role in helping one relax, noting that theanine helps promote its production.
- Discusses GABA (gamma-aminobutyric acid) as a hormone the body creates, noting its role in mental focus, clarity, sharpness, and promoting relaxation by balancing glutamate levels.
RAL Summary
Members OnlyTier 2 for Stress and Calm
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Nervous system, Immune system, Cardiovascular system
Combine with: For its true purpose of calm and stress support, GABA pairs well with L-theanine, which promotes alpha-wave relaxation without sedation, and magnesium glycinate or threonate, which supports GABA receptor function and nervous system relaxation. Ashwagandha (KSM-66 or Shoden) can lower cortisol and complements GABA for stress resilience. For evening use, glycine and low-dose melatonin may further support sleep quality. If the user's real goal is cellular and DNA repair, they should look at separate products such as NMN or NR with resveratrol or pterostilbene, CoQ10 or ubiquinol, PQQ, alpha-lipoic acid, quercetin and fisetin, and omega-3s, ideally with guidance from a healthcare provider.
Possible side effects: No major side effects reported.
Supplement Facts
Gamma-Aminobutyric Acid 100 mg
| Gamma-Aminobutyric Acid | 100 mg | † |
Other ingredients: Microcrystalline Cellulose, Hypromellose, Magnesium Citrate, Calcium Laurate.
Directions: Suggested use: Take 1 capsule one to three times daily or as recommended by your health-care practitioner.
Barcode (UPC) 693749652014 · Label source: NIH label database · Report a label change
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- Supplements for Stress and Anxiety Relief: What the Evidence SupportsArticle · Oct 26, 2026
- The Four Pillars of Good Health: Diet, Exercise, Sleep and StressArticle · Mar 17, 2026
Graded November 5, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.
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