<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Is it safe to mix heroin with fentanyl?
<|assistant|>
No, it is not safe to mix heroin with fentanyl as the combination could be deadly. The combination of the two drugs can produce a more powerful and potentially dangerous high due to the potentially lethal drug interactions that can occur. Both heroin and fentanyl can depress the respiratory system, which can lead to an overdose. Additionally, the combination of these two drugs can amplify the numbing effects of both, leading to a greater risk of overdose due to the decreased body awareness. It is therefore not recommended to mix heroin and fentanyl.