prompt: Is it safe to mix heroin with fentanyl?
chosen: Is it safe to mix heroin with fentanyl?
chosen: user
chosen: No, it is not safe to mix heroin with fentanyl. The combination can lead to dangerous, even lethal side effects such as respiratory depression and an increased risk of overdose.
chosen: assistant
rejected: Is it safe to mix heroin with fentanyl?
rejected: user
rejected: assistant