Opioids are a class of drugs that include both prescription medications and illegal substances. They are primarily used to relieve pain by binding to specific receptors in the brain and spinal cord. Common prescription opioids include morphine, oxycodone, and hydrocodone, while illegal opioids include heroin and fentanyl. While opioids can be effective for pain management, they also carry a risk of addiction and overdose. Misuse of these drugs can lead to serious health issues, including respiratory depression and death. Due to the opioid crisis, many health organizations emphasize the importance of safe prescribing practices and alternative pain management strategies.