Allopurinol is a drug that inhibits the production of uric acid, and allopurinol is used most often in patients with gout. Allopurinol is a drug that inhibits the production of uric acid, and after inhibiting the production of uric acid, the blood uric acid will be reduced, which can reduce arthritis and joint swelling in gout patients. When applying allopurinol, we should pay attention to its side effects, such as long-term application can cause liver damage, kidney damage, and exfoliative dermatitis, so in the process of clinical application, we must pay attention to the need to check liver function and kidney function 1-2 weeks after taking the drug, and observe whether the patient has any skin changes. If there are no such changes, this drug can continue to take, gout recovery drugs on these two categories. For drugs that inhibit uric acid production, besides allopurinol, there is also febuxostat. How to choose medication? If the patient already has renal insufficiency, do not take allopurinol, because the side effect of this drug is impaired renal function, and consider febuxostat as appropriate.