Epalrestat tablets are drugs for the treatment of diabetic neuropathy and are aldose reductase inhibitors. Reversible inhibition of the metabolic pathway of polyols associated with the onset of diabetic complications can effectively prevent, improve as well as treat the complications of diabetes mellitus, peripheral neuropathy. This improves the patient’s pain, numbness, and other adverse sensations. Severe diabetic neuropathy is one of the most painful complications of diabetes and can seriously affect the quality of life of diabetic patients. Therefore, when neurological complications are detected, they should be treated with medication in a timely manner. It is important to know that when Epalrestat tablets are applied, the urine may appear brownish red, which is normal and should not be worried. If the effect is not good after 12 weeks of application, you should go to the hospital and change to other medication under the guidance of your doctor.