After switching to IV, it only took me about a week before I was needing to IV as much as I had been sniffing. But here's the thing, IV definitely lasts shorter. If I sniffed a bunch of dope, not only would I be high longer but it would stave off withdrawal for almost 20 hours sometimes. When I inject, the heavy part of the high wears within an hour or two and then I am already getting dopesick after 12 hours. So considering the duration, wouldn't it actually be more economical to sniff than to IV? Is it a misconception among addicts that IV is the most economical way to use heroin? It is the most efficient way but efficient does not equal economical because the body just builds greater tolerance and because it wears off faster, you have to redose again causing you to spend more, not less money. I don't think sniffing is a waste of dope at all, I think the only advantages to IV are the rush, no unpleasant drop and a "lighter" feeling high with less tiredness (once you get past the first few hours) and less likelihood to cause a hangover. What do you guys think?