What do the states mean?+
- Solid: well studied, and it works.
- Half-there: the science is still forming.
- A ghost: almost no real studies.
- Hollow: well studied, and it does not work.
- A cord: the pair itself has been tested together.
- Air: nobody has ever tested this pair.
The full scoring method: How we score
GABA benefits: where the science stands
Almost nobody has looked.
As of August 2026, 571 papers on PubMed mention GABA, but almost none put it to a real test. For sleep, the best evidence is just a trial of 30 people, and they lean positive. Early signs, not proof. Every claim we checked is below.
571 papers on PubMed · evidence from 2 trials
Claim by claim
- SleepAlmost no real studies. What exists leans positive.
- Gut and digestionAlmost no real studies. What exists leans positive.
- MoodAlmost no real studies. What exists leans positive.
Pairs people ask about
The two sources we read
- 2024Randomized trial · 30 people · benefit for mood; benefit for sleepsource
- 2026Crossover trial · 20 people · benefit for gut and digestionsource
Chosen as the strongest evidence out of 571 papers on PubMed. Every row links to its paper.
Fair questions
Does GABA work?+
Nobody can honestly say: almost no real studies exist, whatever the label promises.
Is GABA safe?+
No caution is recorded on this page. That is not a safety guarantee; the studies we read were not safety trials.
How many studies exist?+
571 on PubMed for GABA itself; the count is measured from PubMed, not estimated. We read the two strongest and linked every one above.