I have been doing opioids/opiates for years, steadily every day, so I have a tolerance. I don't care what people say about morphine sulfate.. It does the trick for me intra-nasally. When you eat it, it goes thru first pass metabolism and thats what gives it a low bioavalibility. It doesn't go thru first-pass when you snort it up the nose. The other day I did 2 mg of suboxone cus I didn't have anything and was hurting. I waited 25 hours and took 47 mg of hydrocodone. I was feeling pretty good. 4 hours after that I sniffed a 30 mg IR morph. It was feeling nice to say the least. A few hours later I sniffed another IR 30, and was officially there. The rest of that day and night I had that heavy, opiate feeling. I had the heavy, warm head feeling, the body forcefield feeling, the heavy eyes, itching (which I love). I was sinking into my couch, never felt more comfortable, feeling out of it but focused at the same time. And I usually do the hard stuff (opana, dilaudid, fentanyl, oxycodone). People slag morphine, but I think its great when insufflated. It doesn't go thru first pass that way.