I received 100mg from a credible source this morning. My .001g scale wasn't calibrating properly (it was accurate enough when weighing the whole 100mg, but not so when attempting to weigh 10mg), so I decided I would just prepare a solution of 100mg / 10ml, or 10mg/ml. I had some trouble cleanly getting the contents out of the (oversized) baggie, I'm guessing about ~90% made it into the solution, which would equate to 0.9mg/ml.
My dosing schedule has been roughly as follows:
t+0:00 1mg added to a cup of juice and quickly ingested.
t+0:10 1mg was insufflated.
t+0:30 Not feeling much, very slightly more 'alert' feeling. No motivational increase yet.
t+0:35 Decided to IV a little less than 1ml, which would equal somewhere between 0.7mg and 0.9mg depending on how accurately the solution was made.
t+1:00 No rush noted, feeling a small bit more stimulated, still not much going on in any department though.
t+1:20 The level of stimulation still seems well on the low end. Decide to IV ~1.5mg. Very subtle rush noted, another small increase in stimulation.
Its now around t+2:20, I decided with the last dose to let things level out before considering another dose. So far the experience has been very surprisingly mild. Based on my relatively sensitive nature to MDPV, MPH, combined with the vast number of 'WARNING', 'OOPS', and 'O-SHIT'-esque trip reports, I thought that 3-5mg would have me heavily stimulated if not overwhelmingly so.
Maybe less 2-DPMP made it into the solution then I previously assumed?
Also, does anyone have a link or info regarding the stability of 2-DPMP in a pure dH20 solution?
EDIT: Its now t+11:00ish and the experience seems to be beginning its descent. The effects reached a smooth, fairly mild, long-lasting peak around t+3:00. When I first started peaking I experienced some anxiety, very similar to the kind I get with a heavy dose of MDPV, only a few magnitudes weaker. This greatly diminished when I got myself outside and active. Dinner was effortlessly, even enjoyably, consumed without the aid of cannabis (rare for me on stimulants). I noticed, as others pointed out, that not long after eating a full meal I felt like I could eat another. I don't know if this has to do with increased rate of metabolism or what, but it was refreshing to actually crave nutrition on a stimulant.
Summary of effects (4mg - 4.5mg): A decent 'functional' stimulant. Exceptionally long-lasting. Good for maintaining energy levels throughout the day and even into the evening. Not so good for treating social anxiety / any anxiety. Similarities to methylphenidate, MDPV, not so much amphetamines. Feels focused at times, and scatter-brained (reminiscent of MDPV) at others. Has little, yet existent, recreational potential. It is something I might take 'for the hell of it' on a random weekday with combined recreational and functional intentions, but not something I would take before going out on a friday night. That kind of thing. IV administration was not much more intense then intranasal, and with dosages of <1.75mg certainly no rush was associated. Although I haven't experienced it yet, its very apparent that this compound has strict limits, and a dark side. A very slight compulsion to re-dose was noticed, though logic prevailed. Nothing like the fiendish grasp of MDPV. Would pair well with a calming agent, such as Kratom or Kava-Kava. Benzo's would be handy to aid in getting some sleep, and/or taming an overwhelming experience.
Conclusion: 2-DPMP is definitely worth trying if you can show it the respect it demands.