Andrographis paniculata is very bitter. A small half of the leaves are very bitter. The most important role is: clear heat and detoxification, cool blood. It can be used externally to treat carbuncle sores and ulcers, as well as poisonous snake bites. The single flavor of the medicine to boil to drink, usually the amount will be more, then it is best to boil a little longer. Its alkaloids have some small toxicity. But as long as it floats in the soup on the foam removed or boiled until no more can be. If you take it for a long time. Bitter cold hurts the stomach, that's for sure~~