I have never tried opium but given many painkillers are called "Opiates" I imagine they all share the same fundamental mechanism of opium and feel like differen

I have never tried opium but given many painkillers are called "Opiates" I imagine they all share the same fundamental mechanism of opium and feel like different flavors of each other. Quite unlike marijuana then. https://en.m.wikipedia.org/wiki/Opiate https://en.m.wikipedia.org/wiki/Opiate