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Fénix Methode

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Sleep & calmWeak evidence

GABA

Also known as: gamma-aminobutyric acid

GABA is the brain's main calming neurotransmitter. Whether GABA from supplements reaches the brain is uncertain, and studies on its effects are small.

What it is used for

  • Falling asleep – weak evidence
  • Stress reduction – weak evidence
  • Relaxation before performance – weak evidence

Forms and how they differ

GABA (synthetic)

common capsules and powder

fermented GABA

made by fermentation; most small studies used this form

chewables and GABA plus complexes

often with L-theanine, magnesium or herbs – quality depends on the label

When to take it

In the evening 30–60 minutes before bed or in stressful moments.

Pairs well with

Works well with magnesium, L-theanine and glycine.

Do not combine / separate

Do not combine with alcohol, sleeping pills, sedatives or blood pressure medicines without consulting your doctor.

Watch out for

Not recommended in pregnancy or breastfeeding due to lack of data. If you have low blood pressure, liver or kidney disease or take medicines, consult your doctor.

Safety

May cause mild tingling or drowsiness. Do not exceed the label dose.

Practical tip

If you try GABA, judge the effect over several evenings with the same sleep routine.

Products containing GABA 10

GABA + L-theanineliposomalSleepStressMoodFocus
GABA 250 mggamma-aminobutyric acid · 250 mg / capsuleSleepStressMood
GABA 500 mg500 mg / capsuleSleepStressMood
GABA + Vitamin B6 500 mggamma-aminobutyric acid · 500 mg / capsuleSleepStressMoodEnergy
GABA 750 mggamma-aminobutyric acid · 750 mg / capsuleSleepStressMood
GABA complexcomplexSleepStressMood
GABASleepStressMood
GABA + Taurine + L-theanine 500 mgchewable · 500 mg / tabletSleepStressMoodHeart & vessels
GABASleepStressMood
GABAkids powderSleepStressMood
How to read the evidence rating
Strong evidenceModerate evidenceWeak evidenceNo evidence

Strong = several good human studies or official recommendations; moderate = promising but smaller studies; weak = few studies or mixed results; no evidence = claims not confirmed.

Combination check

Select the supplements you take and, if relevant, your medicines. We show what interferes, what needs a time gap and what to watch out for.

Check GABA with others

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From the same group

5-HTPWeak evidenceApigeninWeak evidenceCBDWeak evidenceChamomileWeak evidenceL-theanineWeak evidenceLavenderModerate evidence
Important notice

This information is educational and does not replace advice from a doctor or pharmacist. We do not give medicine dosages. Supplements are no substitute for a varied diet; if pregnant, breastfeeding, ill or on medication, consult a doctor first.