Xorkoth- not difficult in the least. It is sort of like DMT or ketamine in that when you take a large enough dose any defenses or fear is just vanquished. Physically it was so much smoother than reports had led me to believe. MGS experienced the same thing. I was anticipating a three day trip ravaging my body with all sorts of unpleasant stimulation and vomiting, etc. I didn't even get nausea, and never once felt physically uncomfortable....my pulse dropped to 40 bpm for awhile according to my sitter, but not long enough to be dangerous. It was very smooth...4 hours of complete immersion, and then about 30 hours of calm reflection and analysis, and a complete absence of all fear, of any sort. Truly a magical window through which to view ones life, and the world... I cried, I laughed, I let go.....the experience guides itself, and one really has the impression of tapping into some ancient knowledge or portal, and comes out feeling cleansed...physically, mentally, and spiritually.
There is pronounced ataxia for the first bit of the trip, but that was the only real "side effect", and not an unpleasant one. I've been studying up on the pharmacokinetics of such since, and ibogaine lights up the brain like a Christmas tree. I can't say enough good things about it. Coming from a scientific background I try and remain objective about it all...but years and years of pursuing entheogens as a full time job has really challenged some of the logical precepts I hold onto. Iboga really pushed that envelope further yet!
I'll get a trip report up soon...I promised MGS the same, and there are so few out there that it needs to be done. I also think it would help my integration of the experience as well to try and bind it to paper.