Snort them. I had the 25mg (a firend actually who likes them) on a few occasions. Orally I took 6 one night and felt like 60mg codeine so I though they were SHIT (his mom got them from her dentist as pain medication). They next day we said to snort them since we both hate and are afraid of needles, plus its the most dirty thing in my opinion, unless you HAVE to, in a hospital type situation.
Anyways, snorted it was amongst one of the GOOD or REALY GOOD opioids. Its also special in that it has a certain hallucinatory aspect to it (probably from the histamine release..I assume). Here's the 'trick'. Crush your 1st pill, and divide it in as many lines as you can...I suggest 3-4 lines. Snort one or two and WAIT (for at LEAST 10 minutes...15min is a good)! The reason for this is because demerol snorted BURNS just as bad as very, very good MDMA/MDA in pill form if you've ever had it, if not, I will tell you I've snorted percocets and that is nothing to this. It BURNS! But the real reason you wait is for the pain kiling effects to come on. After your first 25mg, I SWARE to you that me and my buddy (btw, my buddy was newer to opioids than I was, we made the mistake to snort almost the whole 25mg pills in about 2 big lines at once up each nostril, eyes watering and we wanted to do right away the rest of the 25mg pill but he said "hey fuck it...forget about it lets just take a bunch orally, we can't do this man" but since I kept insisting on him getting a good opioid 'feel' he allright but he was like okay but let's wait a couple of minutes until i'm ready to go again.)
After no more than 5min we did the rest of the pill and within 15min-20min it started to work. He said...lets's do another one. We get the lines ready and we're like "Okay let's get ready for our nose to be burned to shit"..we decided to do it all in at once in a couple of lines. I SWARE to you that the next few lines, barely felt painful at all. Now we were at 50mg, my frined (an opioid newbie) was LOVING it, he was hoping around the place getting ready for the next one....long story short he ened up at 3 hundred something MG (almost 35mg snorted) and me about 280mg or something like that flat out. We thought we were getting used to the lines due to our noses not burning like the first line...then it cliked it why to one of us: we were snorting a powerfull painkiller, numbing our noses, the pain was still there but we just we numb to the pain.
The reason I mention this story is b/c, it was a lovely high (AND A VERY LONG ONE CONSIDERING WE WERE SNORTING IT) but at during the night towards the morning and esp upon waking up next day both our noses ened up being so clogged up with bits of powders, that every time I'd blow my nose I'd find pieces of the snorted powder from the night before.
However the reason we kept snorting it from then on was bacuse it way 3-4 time more effective than orally. 6 oral 25mg pills felt like one 25mg pill snorted. Also I had some hallucinatory effects (very very small...but on demerol I felt the most sense of being in a 'dream world' and I haven't tried morphine or heroin but i've had pure codeine phosphate many time the 30mg pills not the T1 extract shit with caffeine, and I preffer the pure codeine without caffeine high even over oxys which I find less sedating). The hallucinations were more of the gravol/dramamine type hallucinations rather than say psychedelic type. However I only had very small and only for a bit like seeing little lines of people dancing on a washing machine...while I was trying to nodd out on his couch. I'm sure I would have gone to dream world had it been just me and the demerol, the t.v. and the comfy couch, but he was much more upbeat than I was and so we kept chatting. My friend was into Ecstacy at that time and that night he said the best drug isn't E no more, but opioids/opiate.
Hopefully it wasn't just rambling but you got an idea of the demerol high, and its effects. I suggest you ONLY snort it. We DID snort a LOT of powder, and I had a small tolerence too but I was loving it, except the 'TRICK' with the lines at the beging of session and the end with clogged up noses. I thought it was worth it though/so did he and we both repeated it.