Tonight I've been reading a bunch of the trip reports for 2C-I on Erowid. Nearly all of them had dosages of 25mg or less, while there were a few about accidental overdoses of 100mg or more. I haven't been able to find anything in, say, the 30-60mg range. Are there any of you out there who have (intentionally

) done 30mg or more of 2C-I? I did 36mg once several years ago, and I'd like to visit that space again someday, but the body load was pretty tough (waaaay too much muscle tension).
As well as quite a lot of 10-25mg doses, I've taken 30mg, 35mg, 40mg and 60-65mg. I've also had roughly 70mg of 2C-E, unintentionally.
Experiences are interesting. I had more problems with the body load around the 30mg range than with higher doses - I was a bit too scattered to focus on any physical discomfort. Coordination goes out the window - on 40mg it took me 15 minutes to get up two flights of carpeted stairs (they were flowing downwards like water, most disconcerting) and on 60-65mg I'm pretty sure I spent the peak lying naked on my bed rubbing myself up and down with my hands. At 40mg it also took me about 5 minutes to figure out that the discomfort I was feeling was thirst, and another 5 minutes to figure out that I could fix it by filling my glass with water... which is why I started to try to climb the stairs! Visuals remain completely grounded in reality at 40mg and apart from a couple of hours at the peak, the same at the highest doses I've taken... what I mean is, you can tell what everything around you is, including recognising people. Headspace is generally positive, but gets increasingly disjointed and unfocused as dosage rises - I've never had any particularly profound or mystical experiences with the stuff, nor any intense epiphanies or realisations, but on the flip side I've never had any bad experiences and have only ever had two bouts of unhappiness or paranoia that were easily dealt with. I find it a fun, light-hearted, comparatively social psychedelic at lower doses and an interesting but ultimately unfulfilling one at higher doses - the experiences are all fun, but they don't make it beyond that and you lose a lot of coherence, attentiveness and memory of the experience.
50mg is probably the highest I'd recommend (inferring from the two doses around it) if you're interested in high-dose 2C-I, experienced with the stuff and build up to that level over a few well-spaced trips. I can't imagine it being remotely unsafe and I had no side-effects that were even slightly worrying. Duration seems to increase at higher doses - detectable effects after about 12 hours at the highest two doses, about 10 hours at 40mg, etc. Factor that in to your preparations if you do try it.
My favourite dose is 15mg or so. Low enough to avoid much physical discomfort, and high enough to experience all of what I'd consider its primary positives. I wouldn't take a large dose again and I think there are better substances to experiment with at these intensities.
(That said, the 40mg trip was great fun. It was an accidentally high dose and I was thoroughly miserable for the first 30 minutes of proper effects, then it occurred to me that people take the drug for
fun and the idea was so ridiculous that I creased up laughing for god knows how long. After I finally stopped laughing I was in a great mood for the rest of the trip. I went to play snooker that morning with residual visuals and was better than usual).