Do not take Suboxone intraveinuosly. The Narcan (naloxone) in subs is broken down and destroyed by Ameilase (the enzyme in your saliva that starts the process of digestion). Naloxone is absorbed poorly in your GI tract and 100% IV, so you would be sick as hell if you shot a Suboxone. I was a heroin addict for 21 years, with pills before, during H addiction, and currently (for legit, severe chronic pain) and I can tell you that, in my experience, buprenorphine has no recreational value. I remember getting out of jail after doing a stint a few years ago (I forget how long I was in that particular time, but I think at least 6 months) and, wanting to get higher than the paltry 10mg of Xanax and two Lokos I consumed when I got home, I remembered several orange stop signs (the N8 imprint, 8mg Rekitt Benkaiser subs) I had on the stash for sick days. In the hopes of getting some kind of buzz, since I was at least 6 months fresh, I sub-L one and wait an hour. Nothing. I sub-L another and wait an hour, still no effects. Suboxone/Subutex have no rec value, and if you IV Suboxone, you will get 100% of the naloxone and be sick as shit. IV Subutex, which is just bupernorphine without naloxone (just in case you didn't know) has no advantages to sub-L, except an instant relief of WDs (not worth the risk of a nasty abscess if you miss part of your shot, and it's a pain in the ass to filter and make into a shot). Just some friendly advice from someone that has been around the block more times than I care to admit. Stick to it's intended purpose and ROA. I'm aware that everyone's body chemistry is different (people constantly tell me I'm stupid for doing 15 and 20mg intra-nasal Xanax doses, especially on this site, with a bunch of know-it-all, rocket scientist assholes that can't wait to tell you that you're stupid and WRONG, but high, intra-nasal dosages is really the only way I can feel anything from Xanax), but I'm just trying to keep you from getting abscesses and, even worse, wasting buprenorphine that will come in mighty handy when you get ahold of some real opioids and get a habit again (let's face it, it's almost certainly going to happen since you are wanting to get high with buprenorphine, the gears are turning in your head already).
As keeping mentioned, it's a partial opioid agonist. A lot of people think it's the Narcan that makes you sick if you're opioid dependent and take it sub-L before you are good and sick. It's actually the bupe itself that pushes full agonist opioids/opiates from the receptors, so it can get in, that makes you ill. Hope you see this before you IV buprenorphine. The stuff is chemically engineered to not get you high and keep full agonists from getting you high (unless you take a low dose of buprenorphine, like 2mg to get the yanks off until you score, and then shoot beyond it). Consuming buprenorphine for recreational purposes is a waste of a sub ime. On a side note, I have found that, despite what a Dr or Pharmacist will tell you, buprenorphine seems to make benzos weaker ime; take that for what it's worth, I just thought it was relevant, since they often say that buprenorphine is dangerous with benzos and booze since it synergizes and causes additional resperatory depression. I remember taking 18mg of Xanax before group when I was on a sub program, and they had little effect. Whatever you do, consider my advice (and I normally tell people not to heed my advice on drugs and dosages/combos if they care if they live). Seriously tho, don't try getting a buzz on subs, you'll just wast them and you will be kicking yourself for taking subs for recreation, stick to "classic" opioids/opiates if you want a buzz. Just trying to help ~downerhead.