Kava's South Pacific Roots

Key Takeaways

• Kava is increasingly commercialized in the U.S. despite originating from traditional South Pacific use, creating variability in product type, dose exposure, and consumer patterns.
• Anxiolytic effects appear plausible but may require weeks of use, whereas evidence for non-anxiety indications remains insufficient for confident clinical recommendation.
• Rare, serious liver injury has been reported with some kava products, necessitating vigilance for hepatotoxicity signals in supplement histories.
• Hepatotoxic risk may be modulated by cultivar choice, extraction methodology, and formulation/manufacturing practices, underscoring the importance of product-specific factors rather than plant identity alone.