The difference between oliracetam and piracetam is the indications, contraindications and side effects, and both drugs belong to the improvement of cerebral metabolism. 1. Indications: Olracetam is used to improve memory and mental retardation caused by mild to moderate vascular dementia, Alzheimer’s disease and traumatic brain injury; Piracetam is used to treat memory loss and dysfunction caused by acute and chronic cerebrovascular disease, traumatic brain injury and toxic encephalopathy, etc. It can also be used in children with retarded mental development. 2. Contraindications: Piracetam is contraindicated in people who are allergic to the product; Piracetam is contraindicated in people with extrapyramidal disorders, Huntington’s chorea, so as not to aggravate the symptoms. 3. Side effects: Olracetam side effects include nausea, abdominal pain, skin itching, etc., which will subside soon after stopping the drug; piracetam side effects include nausea, abdominal pain, abdominal distension, loss of appetite, dizziness, sleep disorders, and mild elevation of aminotransferases; in contrast, Olracetam has fewer side effects. If you have a need for medication, it is recommended to consult a regular hospital, do not blindly self-medication.