I posted this in trip reports but I believe it would be valid here as well:
I'll give everyone a brief run down of 10 friends of mine and myself that have tried it within the past two weeks. This is without bias and just the straight facts per what I saw, heard and felt.
Me: I initially mixed it with TFMPP which was stupid because TFMPP seems to give me panic attacks...that come and go for up to a week after ingestion. The first time I was smoothed out by the peak of the mcPP, which actually worked to induce enough euphoria to overcome the panic. The second time I tried it, I drank it with some juice..30mg initial dose and I dosed another 30mg an hour after the same way. The effects were pleasant but a bit mild. The third time I just bombed a 65mg capsule of it and had a blast. My stomach was kind of tight during the come up but after that it was quite pleasant.
A: Tried it with a shite load of codeine in his stomach. He took 30mg and said it felt like it sobered up his codeine high and he took another 30mg and an hour later stated he was "rolling" quite nicely... he was rubbing himself down, so I knew he was atleast feeling damn good .
B. Took 30mg and 30mg an hour later, stated it felt like MDMA but without the euphoric edge.
C. Crazy tit... he took 3 capsules with 65mg a piece in them, depsite being advised not to, but oddly enough felt no nausea and ended up on the floor next to the speakers with a perma-grin and one eye half open with the other closed. He said he had never felt so great physically, and that each bit of the music sent tingles through his body. On top of this, effects didn't fade until 7 hours after ingestion.
D. Never took MDMA before, took one 65mg capsule of mcPP and stated he felt "high as fuck" an hour in and would not stop laughing. No reported nausea.
E. Not experienced with MDMA either, took one 65mg capsule and in a very similar manner felt high, took a few hits of pot and stated she has never felt it so much before. No reported nausea either.
--Might be of value to know D. and E. are boyfriend/girlfriend--
The next 5 people all went to go see Tiesto and each took a 65mg capsule prior to entering.
F. Reported feeling horribly nauseas and that she wanted to throw up but couldn't. Ended up vomitting 3 hours in and said she felt much better after that.
G. No nausea and stated it felt like a strong dose of MDMA. Was dancing all through the set, enjoying himself.
H. No nausea and was very socialable. Jaw clench, stated it felt like MDMA but with a trippy side to it. (This I can see)
I. Slight stomach discomfort during the come up but after that said she had the time of her life. Stated she was "peaking" for 5 hours straight.
J. No reported nausea and said it felt like ecstasy but a bit more relaxed on the body.
There you have it. It seems that some people just get nauseas with this. If I would advise anything it would be to try it out with a dose less than 50mg and see how it reacts and then just go up from there until you find your ideal dosage. It is not nearly as forgiving as MDMA when it comes to dosage... the difference of 30mg could mean the difference between a night of bliss or a night of terror.
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At a show, some friends and I each took about 70mg of mCPP. One of us felt good but not great so he wanted another 70mg about an hour and a half in, so he took another, and an hour later claimed to be on cloud 9. He stated he was rolling hard.
My other two friends had to sit away from the crowd and stated that they never rolled but just tripped. They said they had rather intense visuals and felt very introspective.
Most interestingly, another friend of mine took 70mg after coming down off some MDMA and alcohol, and had the most intense trip of his life. He is not a neophyte to the psychedelic world and told me that he was having a hard,hard, HARD +3 peak that lasted about 6 hours and the effects did not start subsiding until 12 hours in. He started to think this was 2C-T-7 instead.
I am beginning to believe that this substance more so resembles MDA than MDMA. There is little to no empathy on it, but there is a mood lift and definately a visual component. There are extreme tactile sensations as well. There is also a bit of a comfortable feeling with it that almost leads me to believe if I were comfortable enough I could fall to sleep on it, although I know I couldn't, my body is just THAT comfortable. Music appreciation is amplified to a level beyond MDMA and probably more similar to your typical psychedelics in that regard. I noticed that when listening to atmospheric music I was swamped with very nostalgiac landscapes in my mind's eye, and I was definately in a very care-free state of mind.
The anxiety that is caused by the come up of this substance could very well be caused by the misinformation out there about it. It is constantly compared to MDMA, and so when people take it and start getting the typical psychedelic onset shivers and crawling mental imagery, it probably sets people off in a bad way because it is not expected if it is to be something similar to MDMA. You can look at a light, close your eyes, and the light will reform itself multiple times in your CEV's. There is no simply ignoring the psychedelic aspect of this chemical so if you start feel overwhelmed then it could very well become messy. This is probably why I am always a bit anxious on the come up. Next time I will attempt this substance expecting more of a trip.
So, lets compare it to MDA. MDA tends to leave room for some negative thinking. This definately does too. The visuals.. hard to describe. MDA's visuals are a bit more apparent while mCPP's are more there but you are not exactly sure what you are seeing, if that makes any sense. Kind of odd...and I dare say, a bit discomforting. This is a bit subjective though, because like I have noted, some people seem to get actual breathing walls, morphing imagery, and other full on visuals from mCPP. The durations are of the two compounds are shockingly similar.
The key difference here is toxity. I cannot help but think that mCPP is somehow more damaging than either MDA or MDMA, or your typical psychedelic substance. It seems like my HPPD symptoms linger on quite a bit more and more intensely since my use of mCPP, and also, since my use, I've been having random spurs of panic attacks that hit when I stay up for a long time or am not in premium physical health. This could be from my use of TFMPP as well, or any number of things, because I have not heard this reported by anyone else before.