A great deal of controversy about the side effects of kava, and some States and approved for use in small amounts, while others, such as Germany and Canada, have banned their sale. It is available in countries like the United States, in the South Pacific from whence it derives, in many European countries, but agencies and the International Energy Agency, such as the United States Food and Drug Administration to continue to evaluate as a rule are likely to not be available widely to the people. Others argue that the moderate use of these herbal material has excellent effects on the promotion of sleep or treat anxiety. The jury is still out on whether most of the world will ultimately embrace or reject as useful as one is very harmful to use. The main area of concern on the adverse side effects kava are those that can refer to the damage in the liver. Some studies suggest that even in the quantities of low doses, some people suffer damage from use of this herb in the form of liquid or pill. WebMD ® sums it up in three simple words: "Do not use" warning signs that may indicate the use of kava is the creation of liver damage include yellowing of the skin or whites of the eyes, dark urine, or blood in the urine. At the very least, people with any type of liver disease, people who drink alcohol, or those who take any other drugs metabolized in the liver such as acetaminophen should not use kava. Some argue that no one should.
