The efficacy of Epalrestat Tablets is to treat diabetic neuropathy in order to improve the uncomfortable symptoms, control the condition and so on. Epalrestat tablets can selectively inhibit aldose reductase, so it can inhibit the accumulation of sorbitol in the body’s red blood cells, in order to improve the symptoms of diabetic neuropathy patients, neurological dysfunction and other effects. At the same time, people with diabetic neuropathy take epalrestat tablets as prescribed by the doctor, but also to achieve the purpose of controlling the condition, which is beneficial to the recovery of the body. Some patients may experience adverse reactions such as erythema, rash, skin itching, nausea and vomiting, abdominal pain and so on after using Epalrestat Tablets, and the drug needs to be stopped immediately when the body has an allergic reaction. If the patient is allergic to Epalrestat Tablets, it is contraindicated. The brownish-red color of urine in some patients is a normal phenomenon, and there is no need to worry too much. Patients are advised to use Epalrestat tablets as prescribed by their doctor and not to use the drug on their own. If the drug is ineffective for 12 weeks, the patient should change the drug or reformulate the treatment plan according to the doctor’s advice.