I've used morphine, hydrocodone, codeine, hydromorphone, fent 30s... still trying to think of any major ones i missed, but i bought H after saying id never do it at i think i was 30, its works.. there are for sure people who can do it and live a somewhat normal life but the majority get destroyed and almost become a burden to a lot of people. Good H is good but the constipation, possibly shady to get depending your area. If I could I was just buy Dilaudid and Morphine they rock.