Pyracetam has the effect of activating brain cells and nourishing the central nervous system. It is mainly used clinically for memory loss caused by acute and chronic cerebrovascular disease, traumatic brain injury, various toxic encephalopathies and dementia, as well as mild to moderate brain dysfunction, and also for children with mental retardation. For example, patients with chorea of the extrapyramidal system should not use Brainfresh easily, as it may lead to aggravation of symptoms. Patients with epilepsy also need to be cautious with Cerebroflucan, because the activation of brain cells by Cerebroflucan can cause excitement in patients, which may induce seizures to some extent. The side effects of the drug should also be monitored during the course of the medication and the liver function should be dynamically reviewed to see if there are any abnormalities in the liver function. Once there is liver function impairment, the drug needs to be discontinued and symptomatic treatment given.