Kidney is bad, what medicine is best to take? First, we need to find out whether it is kidney disease? What is the cause of it? Because there are many types of kidney diseases, the most common one is chronic nephritis. In addition, there are some secondary kidney diseases, such as lupus nephritis, diabetic nephropathy, and so on. These kidney diseases can gradually progress to chronic renal failure and even uremia. The drugs used in different types and stages of kidney disease are also different, so there is no such saying as what kind of medicine is best to take. It is recommended to go to the hospital for a detailed examination of the kidney, first to determine whether it is kidney disease, then to determine what type of kidney disease it is. If necessary, renal biopsy should also be done, and finally treatment should be carried out according to the type of kidney disease.