Uric acid-lowering drugs should be taken for a long time, because once hyperuricemia develops, it is difficult to drop to normal on its own. There are two main sources of blood uric acid levels in the body, as follows: first, exogenous sources, mainly through food intake. Second, endogenous sources, endogenous sources are metabolites produced by the human body in the process of metabolism, so as long as people survive and people are metabolizing, they will continuously produce blood uric acid, which is why the level of blood uric acid will still be higher than normal despite the strict diet and life control of people. Therefore, for uric acid lowering medication, it must be taken for a long time in order to have a sustainable reduction of blood uric acid levels.