Which of the following statements about opioid analgesics is true?

Opioid analgesics are powerful medications used primarily for the management of moderate to severe pain. They are classified as controlled substances due to their potential for misuse and dependency. As such, they are regulated by law, and their prescriptions are restricted. Only licensed healthcare professionals, such as doctors, have the authority to prescribe these medications, ensuring that they are prescribed judiciously and monitored properly. This oversight is crucial because it helps to mitigate the risks associated with opioid use, including the risk of addiction and other adverse effects.

In contrast, other statements regarding opioid analgesics either misrepresent their effects or regulatory status. While opioids are effective in pain management, they cannot be obtained without a prescription, highlighting the importance of medical supervision in their use.