Also known as: piper methysticum, kava kava
Latest evidence update: 2024-12-15
Strongest in Study quality (72). Held back by Recency (18).
Solid mix of RCTs with some methodological gaps.
Good cross-study replication, some imprecision.
Thousands of participants across the literature.
Mostly aligned, with some divergence.
Mostly pre-2020 research; updates may be needed.
No per-outcome numbers yet for this one. Each finding's direction and strength is shown in the research below.
Areas where research points to a consistent direction of effect. The strength of evidence is graded; the size of the effect is not quantified.
Recommended: Not recommended without supervision
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Reduces anxiety symptoms in people with generalized anxiety disorder
Does not impair driving ability or cognitive performance at typical doses
Is not effective for treating insomnia and is not recommended for this use
Is well tolerated with minimal side effects at recommended doses for short-term use
May improve sexual function and drive in people with anxiety