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]: Regression of thyrotoxic ophthalmopathy following lithium withdrawal.
[EX A]: lithium

[EX Q]: Retinoic acid may increase the risk of bone marrow transplant nephropathy.
[EX A]: Retinoic acid

[EX Q]: Vancomycin is the most frequently implicated drug, but other agents have been reported to cause LABD.
[EX A]:
Vancomycin