Skip to main content

Sleep

Kava

Also known as: 'Awa, Kava kava, Piper methysticum, Kava Enhanced Water Extract

B
Evidence

A Pacific island plant traditionally used for relaxation and stress relief, standardized to kavalactones which may modulate GABA and other neurotransmitter systems. Evidence supports anxiolytic effects, though long-term safety concerns regarding liver health warrant caution.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

Find the best Kava supplements — free
See Kava products scored on dose & form, then track your intake in the app.
Open app →

Primary uses

  • Anxiety
  • Social anxiety
  • Sleep
  • Muscle relaxation
  • anxiety reduction
  • relaxation
  • stress relief

How it works

  • Kavalactones modulate GABA-A
  • Non-sedating anxiolytic
  • Muscle relaxant

Dosage

Typical range
100-250 mg kavalactones daily
Timing
As needed or evening
With food
Optional
Duration
Not for daily long-term use
Special populations
Anxiety, social situations

Forms

  • Standardized extract
  • water extract· 70/100

Safety

Common side effects

  • Drowsiness
  • Stomach upset

Contraindications

  • Liver disease
  • Alcohol use

Known interactions

Evidence notes

Effective anxiolytic - liver monitoring advised

Grade B: Some human trials support key claims; further confirmation needed.

Related in Sleep

Check a full stack

Formulate's free interaction checker lets you paste in any combination of supplements and medications at once — every pairing flags severity, timing, and cited evidence.

Open the checker

Where does Kava fit in your stack?

Answer two questions and get a stack graded on research — every ingredient scored on the evidence behind it, not the marketing.

Build my stack

2 questions · free · no account needed to start

Also on iPhone — get the free app

📬 Get new guides in your inbox

Evidence-based supplement guides, no spam

We send a short digest when new guides drop — nothing else. No affiliate pushes, no sponsored content, unsubscribe anytime.

Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.