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.

[EX Q]: A case of aseptic pleuropericarditis in a patient with chronic plaque psoriasis under methotrexate therapy.
[EX A]: methotrexate

[EX Q]: We present three patients with paradoxical seizures; their serum phenytoin levels were 43.5 mcg/mL, 46.5 mcg/mL and 38.3 mcg/mL.
[EX A]: phenytoin

[EX Q]: Nicotinic acid-induced fulminant hepatic failure.
[EX A]:
Nicotinic acid