Piracetam, also known as naofukang, pyrrolide acetamide, acetamide pyrrolione, is a kind of brain metabolism improvement drugs, belongs to gamaminobutyric acid cyclic derivatives, selective to central action, limited to brain function (memory, consciousness, etc.) improvement, mental excitation effect is weak, no side effects of psychotropic drugs, no dependence. It can prevent or protect the retrograde amnesia caused by anoxia in animals, and also can significantly antagonize the inhibitory effect of barbiturate salt on the center. It can promote the metabolism of brain cells, increase the absorption and utilization of amino acids, proteins and glucose in the brain, and has the effect of activating, protecting and repairing brain nerve cells. It can promote the conversion of ADP into ATP in the brain and improve the metabolic energy supply in the brain. It affects the excitatory transmission of cholinergic neurons and promotes the synthesis of acetylcholine. Piracetam can resist the brain function damage caused by Chemicalbook physical factors and chemical factors, improve learning, memory and recall ability. It can improve retrograde amnesia caused by hypoxia. It is easy to absorb orally. After 30 to 40 minutes, the blood drug concentration reaches the peak, the protein binding rate is 30%, the clearance half-life is 4-6 hours, and it is easy to cross the blood-brain barrier and reach the brain and cerebrospinal fluid. After oral administration, it cannot be broken down by the liver and is excreted from urine and stool in its original form. It is mainly used for memory and thinking disorders caused by brain diseases, organic dementia and mental retardation in children, and has certain effect on mild and moderate senile dementia, but has no effect on severe patients. It is also effective in improving the symptoms of functional brain decline syndrome. Piracetam can also be used to restore consciousness in encephalitis, carbon-monoxide, pesticides, and alcoholism by intravenous or intravenous injection.