It is useful to take melatonin for insomnia. The main effect of melatonin is to improve insomnia and dreaminess in patients, and to improve the quality of sleep. In general, it is not recommended that patients take melatonin for a long time, as it is metabolized very quickly, and will be completely metabolized after a few hours. However, melatonin is still a hormonal drug, long-term large amounts or irregular oral intake, easily cause endocrine disorders, so some young women are not recommended to take melatonin to adjust sleep. Long-term melatonin may also lead to dizziness and headaches during the day, so if the patient has insomnia, it is recommended to take some Chinese medicine, or through the way of acupuncture to adjust, and also to adjust from their own lifestyle, which is the most fundamental solution to the problem.