2393
BACKGROUND: NVP is a non-nucleoside reverse transcriptase inhibitor used in the treatment of Human Immunodeficiency Virus (HIV) infection.
 potential therapeutic event: used 
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 potential therapeutic event: used 