I never liked those, supposedly they replaced oxycontin, I think they are pussy shit, they have a time release tho
Replaced oxycontin? Hydromorphone is a lot stronger than Oxycodone ever thought of being.
"They have a time release":
Oxycontin is time-release Oxycodone.
Dilaudid is not time-release, Palladone is the time-release form of Hydromorphone.
The reason 4mg Hydromorphone probably didn't fuck you up is indeed due to the low bioavailability.
Bioavailability - Oral: 30–35%, Intranasal: 52–58%
A big reason people say that hydromorphone really fucks them up, is because a large number of people who use it, inject it. 4mg's of IV hydromorphone will knock you on your ass!