Hi Hypnos,
I have had two experiences with Iboga, and the first of these was without a doubt the deepest and most important plant/psychedelic experience...and really general life experience...I have had in my 25 years of being alive. Iboga is a very special, very ancient, helpful, healing plant, both incredibly powerful, but with a very gentle touch. But I agree completely it is not something to be taken lightly...it deserves considerable respect.
On the 'other entheogen' front...simply untrue. And quite on the contrary in fact! It is definitely wise to abstain for 2 weeks at least following Iboga, and during this time you will be flying on the SSRI effects of the norIbogaine and likely won't feel much need or desire for other entheogens... Iboga is interesting as it works on you positively for a long time AFTER the actual experience itself, and thus it is wise not to interfere with this patterning.
My personal observations;
Cannabis - like a different plant following Iboga. Apparently used by ngangas in central Africa in rituals and magic, sometimes in association with Iboga. For me now, cannabis is quite a profound problem solving plant...it could assist with this before, but much more so now following Iboga. I'm able to examine ideas and scenarios from different angles I'm unable to do while sober (the same thing occurs to a very profound degree on Iboga)...it provides levity and you see connections you didn't see before. It can also be more visionary...my third eye may open and I can sometimes see through my eye lids prior to sleep.
Ayahuasca - since Iboga my relationship with the vine has changed. Before I was seeking incredible visions of the ayahuasca serpent/spirit, which I never received...ayahuasca, both in Peru and here in the UK is consistently gentle with me...playful but never taking me deep or really giving much therapy. Now though, post Iboga, I have had a few ayahuasca sessions, (Daime ayahuasca to be exact, in a Daime style ceremony which was actually really cool...but no I ain't Christian!)...I've got over the vision seeking art of me in this regard. Visuals are often just part of the architecture, and while entertaining at times can distract one from really healing. Ayahuasca now fills me with nourishing and cleansing warmth and light. I feel completely in the present and very greatful for everything I have in life...I exude positivity, and this afterglow stays with me for some time afterwards. The caapi vine is a very special plant. I have a friend who has also experienced Iboga and her experience with ayahuasca has deepened from this.
Mushrooms - my number one ally...they were before Iboga and still are now. If you take mushrooms a few weeks after Iboga you will find them considerably more powerful. I had 6 dried liberty caps (a TINY dose) 2 weeks after Iboga...this is barely enough to feel...and it opened my third eye as clear as had been open on the Iboga.
Mescaline/cactus - I had some acetate around 3 weeks after my first Iboga experience...very pleasurable, and again my third eye opened! Cactus resin is my thing these days and very good indeed.
DMT - I have only smoked it in the form of changa since Iboga...but its just as powerful as it always has been...but since Iboga there has been very little anxiety in the experiences, and some have been incredibly pleasurable.
Also Iboga will not cure anyone of using a substance that you feel comfortable using, such as DMT. If you are addicted to smoking/alcohol/cannabis e.t.c., this will likly be flagged by the Iboga, but if DMT or other psychedelics are a valued part of your life, then this will simply not be an issue.
Anyway Hypnos...all the best in your initiation in a few weeks time. Iboga'd people are quite thin on the ground, so it will be quite fascinating to compare notes in the future maybe...
Take care