Just a couple of observations. It is obviously impossible to know exactly what anyone on this website is getting that comes off the street in powder form, so familiarity is about the only tool you have to figure out what something is that isn't labeled accurately. What you're describing does sound exactly like fentanyl that has been sufficiently diluted (at least for you) with a diluent that is at least water soluble. You hit the nail on the head when you said fentanyl is not the drug everyone cracks it up to be. SWIM is a very experienced user of opiates, primarily pharmaceutical, and always coveted a shot at fentanyl and when they finally got it, it was less than stellar. I once heard it described as heroin without a soul which I liked. There is no warm, abdominal, orgasmic type of rush and the only noteworthy effect is a warm feeling and some moderate sedation which can be pushed to a nod if enough is used. The duration is short unless you have enough to consume multiple doses back to back in which case you get an accumulation akin to methadone in which subsequent doses last longer once your peripheral tissues become saturated. But in SWIM opinion, fentanyl is way over rated and while it will take a moderate to severe withdrawal promptly off your back, given a choice I'd go with just about any other opiate before fentanyl, especially if I had to pay for it. What you got was probably fentanyl that had been less than effectively purified and then diluted to boot. For what it's worth.