Heroin ins a schedule 1 narcotic with potency so high as tk have jim medicinal value. There is a reason why one cannot prescribe heroin despite being a pure pain killer.
Fentanyl is a schedule 2 medication and In the IV form has a very short half life. It’s analogues carfenta and sufenta are far more potent than fentanyl itself. It is these analogies that are far more dangerous and deadly.
Yes, heroin is a schedule 1 narcotic, but the potency has little to do with it, since there are a many opiates that are more powerful than heroin which are not on schedule 1 (hydromorphone, for example, is more powerful than heroin, and available for prescription).
“It’s analogues carfenta and sufenta are far more potent than fentanyl itself.”
Yes, but fentanyl itself is still more powerful than heroin. Why would there be an epidemic of overdoses resulting from people cutting heroin with fentanyl if fentanyl were WEAKER than heroin? That doesn’t make any kind of sense.