so i just Iv'd around 3mg to test the waters. i last took suboxone 17 hrs ago and i have had a pretty big tolerance to opiates despite being on suboxone now (i used to have a heroin Iv habit)...but anyway i couldn't find much on a dose for opana besides 10mg = 80mg of oxy and if that were the case i'd have to be slamming 20mg or so of oxymorphone and that just doesn't seem right. 2-3 mg just gave me a slight rush, so i'm going to go ahead with another 3 mg or so, but is this a waste? to keep redosing shot after shot until i'm high? i'd rather just know a correct dosage so i can get that wonderful rush i've read about. i've heard people with tolerances ODing off 5mg and i don't want to be one of those people...if anybody can give me advice or just discuss their Iv opana experiences i'd greatly appreciate it! thank you