Learning Objectives By the end of this section, you will be able to: Define opioid use disorder Outline methods used to treat opioid use disorder From 1999 to 2021, over 600,000 people died in the United States from an overdose involving prescription or illicit opioids (CDC, 2023). This rise in opioid overdose deaths happened in three … Continue reading 19.4 Opioid Use Disorder