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.

Example Input: A case of clozapine-induced tonic-clonic seizures managed with valproate: implications for clinical care.
Example Output: clozapine

Example Input: Therefore, clinicians should pay close attention to possible onset of RD in patients with multiple risk factors for TD, even when SDA therapy is used.
Example Output: SDA

Example Input: Although no coagulation study was done and the Meckel's diverticulum is normally associated with bleeding, the particular intensity of the following hemorrhage may have been favored by metformin.
Example Output:
metformin