Opioids are a class of drugs that include both legal prescription medications and illegal substances. Common opioids include:
- Morphine
- Codeine
- Fentanyl
- Oxycodone
- Hydrocodone
- Methadone
- Tramadol
- Heroin
If you have a specific list you'd like to categorize, feel free to provide it, and I can help you identify which drugs are opioids.