If it was that bad on the liver alone, by itself and in normal servings, it would have already been banned Look how fast Serzone was in the media. You see, some people make the mistake of combining or mega dosing some beneficial things in life and that's where the problems arise...even vitamins can be toxic, as we all know!!! Yet in normal intake, they are quite beneficial to our health. Kava in normal amounts are no doubt not any more harmful than a vitamin in a normal amount. Certainly not as harmful as a prescription medication....there is a reason why you need the legal ok to get these things...they are quite powerful, otherwise they could be sold OTC...how about that Prozac Tea????