In January 2011, a systematic review of kava research concluded that it is effective for generalised anxiety. Although only six studies were identified, the majority found evidence of benefit.
This evidence may trigger renewed anxiety about the safety of kava. After first becoming popular as a herbal remedy, numerous cases of liver toxicity were reported, including some deaths. This led to several countries banning kava in 2002, with it being voluntarily withdrawn from the Irish market.
Source: DÓNAL O'MATHÚNA, The Irish Times, 22/02/2011
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