Piracetam is a brain metabolism improvement drug, can promote the metabolism of ATP in the brain, can improve the brain metabolism, can enhance the central nervous excitatory conduction, clinically there are injectable liquid, but also oral tablets. It can improve brain metabolism, so it is clinically effective for memory loss and brain dysfunction caused by acute and chronic cerebrovascular diseases, and also for memory loss and brain dysfunction caused by traumatic brain injury or toxic encephalopathy. Piracetam is a brain metabolism improvement drug, has a certain excitatory effect on the central nervous system, individual patients may experience headache and insomnia after oral administration, but there is a direct correlation between the symptoms and the dose of the drug, patients are advised to take it orally under the guidance of a physician. Adverse reactions are mainly gastrointestinal symptoms, individual patients may have nausea, abdominal pain and other symptoms after taking the drug, but it can be tolerated after about 1-2 days, and it is not recommended for patients with extrapyramidal disease, so as not to aggravate the patient’s extrapyramidal symptoms.