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: Based on these findings, the patient was diagnosed with diabetes insipidus secondary to lithium therapy and was treated successfully with amiloride.
Example Output: lithium

Example Input: CONCLUSION: Healthcare professionals should be aware of the possible development of serotonin syndrome as a complication of initiation of fentanyl and other phenylpiperidine opioids in patients treated with SSRIs.
Example Output: fentanyl

Example Input: The authors report a longitudinal case study of a woman with a history of bipolar affective disorder in which L-dopa shortened the manic-depressive cycle length when administered in a double-blind trial.
Example Output:
L-dopa