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: Relief by naloxone of morphine-induced spasm of the sphincter of Oddi in a post-cholecystectomy patient.
Example Output: morphine

Example Input: A retrospective study was conducted of 40 loperamide poisoning cases recorded at the Centre National d'Informations Toxicologiques Veterinaires.
Example Output: loperamide

Example Input: To date, there have been few reports of visual disturbances associated with BTX-B use.
Example Output:
BTX-B