Idebenone tablets are used to treat chronic cerebrovascular diseases and brain function impairment caused by traumatic brain injury, etc. It can improve patients’ subjective discomfort symptoms, language, anxiety, depression, memory loss, decreased intelligence and other mental behavior disorders. The incidence of adverse reactions is about 3%, mainly allergic reactions, rash, nausea, loss of appetite, diarrhea and other gastrointestinal reactions, but also may occur excitement, insomnia, dizziness and other psychiatric symptoms. Occasionally, bone marrow suppression, decreased white blood cell count, and liver function impairment are seen.