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: Stupor and fast activity on electroencephalography in a child treated with valproate.

A: valproate
****
Q: Vigabatrin-induced visual field defects are at present the most important safety issue in the use of the drug.

A: Vigabatrin
****
Q: CONCLUSIONS: Amantadine can cause reversible corneal edema but can irreversibly reduce the density of endothelial cells.

A:
Amantadine
****