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: We describe two cases of PSVT that changed to non-sustained polymorphic ventricular tachycardia after administration of verapamil.

A: verapamil
****
Q: Both patients suddenly became hypotensive after injection of chymopapain into a disk.

A: chymopapain
****
Q: The frequency and relationship of granulocytopenia caused by sustained-release procainamide in patients with tachyarrhythmias are briefly discussed, and prior reported cases are reviewed.

A:
procainamide
****
