In this task, you will be given sentences in which your task is to recognize the name of the drug or medicine. Drugs are substances that change a person's mental or physical state. They can affect how your brain works, how you feel and behave, your understanding, and your senses. Although there might be several correct answers, you need to write one of them.

[Q]: A 78-year-old man with a transvenous cardioverter defibrillator system developed frequent shocks during oral procainamide therapy.
[A]: procainamide


[Q]: In the other patient, a 78-year-old woman, Neisseria mucosa knee arthritis occurred after a single sodium hyaluronate injection.
[A]: sodium hyaluronate


[Q]: The cases are important in documenting that drug-induced dystonias do occur in patients with dementia, that risperidone appears to have contributed to dystonia among elderly patients, and that the categorization of dystonic reactions needs further clarification.
[A]:
risperidone