Treatment of anxiety, tension and restlessness states with Kava special extract WS 1490 in general practice: a randomized placebo-controlled double-blind multicenter trial.

150mg of Kava WS 1490 extract daily in persons suffering from neurotic anxiety noted significant reductions in anxiety as assessed by the Anxiety Status Inventory (ASI) after 4 weeks of treatment.

No effect on liver enzymes (Alkaline Phosphatase, y-GT, GOT, GPT) in this trial