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.
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Question: Depressive symptoms disappeared after interferon therapy was stopped.

Answer: interferon


Question: However, as the use of hepatitis B vaccination is growing, adverse side effects, including mental nerve neuropathy, should be observed with an increased frequency.

Answer: hepatitis B vaccination


Question: A patient is described who developed a poorly differentiated sarcoma after cyclophosphamide was used to treat his rheumatoid arthritis.

Answer:
cyclophosphamide