Which of the following statements is true about narcotics or opioids?

The statement regarding narcotics or opioids that is true is that they cause sedation and euphoria through central nervous system (CNS) depression. Opioids function by binding to specific receptors in the brain and body, which can lead to a number of physiological responses, including pain relief (analgesia), sedation, and feelings of euphoria. This is why they are often prescribed for pain management in clinical settings.

The effects of sedation and euphoria highlight their potential for misuse, which is a crucial aspect of understanding their pharmacological profiles. While they are effective in medical use, their ability to alter mood and consciousness can lead to dependency and addiction if not used appropriately. This characteristic underscores the importance of monitoring and regulating their use in both medical and therapeutic contexts.