I empathize with you in your search for healing, and applaud your bravery in seeking out help from along this route. These ancient plant medicines, like ibogaine, psilocybin mushrooms, and dmt-containing plants are revealing themselves to be the answer to some very modern problems, they are the tool that has been missing from mental health treatment toolbox, and are poised to revolutionize the field. I have a theory that probably falls somewhere in the Gaia hypothesis that psychedelic plants reveal themselves at certain crucial times in evolutionary history, renewing their purpose with each iteration. There's a reason that a place like this exists here, now.
I have suffered from PTSD for a long time, and my initiatory 5-meo DMT experience went alot further towards healing from that in 12 minutes than years of various "treatment"options. What it did for me basically, is provide a spiritual foundation, and awareness of something greater than myself, and among other things that my pain was temporary, and eternal, and only I had the power to remove it. However,I went into that experience alone, and without guidance didn't get the full benefit, I'm sure.
Its powerful stuff, DMT, and the other commonly used psychs for healing- mushrooms, ibogaine,mdma. What makes you so set on the ibogaine route? From what I understand, ibogaine is focused more on the treatment of addiction than PTSD. What about ayahuasca? There has been promising research and plenty of anecdotal evidence to support its efficacy for PTSD healing. I guess mushrooms aren't what you are after, but as aftercare, you may want to look into micro-dosing if you suffer from the depression that often accompanies PTSD. It has been very helpful to me, where anti-depressants have not. The only downside has been lack of access.If you live in a climate where they proliferate (and that's everywhere if you're astute enough to find rarer species), you can gather enough medicine to last a year in one season, if your lucky (or know what your doing,ha). Plus you can grow your own medicine easily.
Congratulations on having the courage to face your demons and walk the path to healing. Keep us updated in your story, please, it helps to know what other peoples experiences are with this, since really the only evidence we have is anecdotal.
Sine experientia nihil sufficienter sciri potest -Roger Bacon
*γνῶθι σεαυτόν*