If you have opiates in your system when you take buprenorphine intravenously the buprenorphine instantly knocks the opiate off the receptors and causes brutal precipitated w/d. this has nothing to do with the naloxone, it's more to do with buprenorphines competitive ability to bind to receptors. The reason why naloxone was added is not to deter abuse, it's to give the illusion that it deters abuse while giving doctors a reason to prescribe it over generic subutex. this is the same reason they made the strips and discontinued the pills, because the patent ran out on sublingual bupe+naloxone tablets. They came out with the strips and jacked the price up on suboxone in an attempt to get people to switch over to the strips so that when the generic comes out (which you can see in my post above has just happened) doctors have another reason to keep people on the strips. Reckitt and Benkiser have invested billions of dollars in suboxone, and the future of that company relies on people buying name brand suboxone.
they are so desperate to keep people buying their suboxone they petitioned the fda to stop any companies from coming up with a generic by claiming a study which they commissioned found that the tablets were more likely to be taken by small children who think theyre candy. of course in the mean time they continued to sell their suboxone tabs as is proving they dont give a shit.
so the point is the naloxone does little to nothing to prevent abuse, and injecting suboxone and naloxone while already maintained on suboxone will not precipitate withdrawals. the only time it would is if you do it to soon after your last use and that would be because of the bupe not the naloxone.
if your interested in learning more about the dark underbelly of drug patents and how they relate to suboxone/naloxone, read this article.
http://www.forbes.com/sites/edsilve...strategy-is-really-about-patients-or-profits/