There is no set course of medication for Epalrestat. Diabetes mellitus may lead to neuropathy and abnormal sensations such as pain, numbness, and burning sensation. Epalrestat is an antidiabetic drug that selectively inhibits aldose reductase and can be used to treat diabetes-induced neuropathy such as pain, touch, and temperature sensory impairments, but does not lower blood sugar. Epalrestat may cause side effects such as allergy, liver function impairment, nausea, vomiting, kidney function impairment, etc. Therefore, there is no fixed course of treatment for taking Epalrestat, and it is related to the individual’s recovery and liver and kidney function. Therefore, it is not recommended to take Epalrestat on your own. You should take Epalrestat under your doctor’s supervision and monitor your blood sugar, liver and kidney function regularly.