MAO inhibitors aren't needed at all for rectal DMT to work, it worked very well for me by simply dissolving 200mg DMT freebase in a small amount of vinegar which converts it to the acetate salt
this was then dissolved in water and administered rectally, the experience was a fully immersed ++++ easily matching the description of 100mg DMT freebase vaporized from TiKHAL
-(with 100 mg, smoked) "As I exhaled I became terribly afraid, my heart very rapid and strong, palms sweating. A terrible sense of dread and doom filled me -- I knew what was happening, I knew I couldn't stop it, but it was so devastating; I was being destroyed -- all that was familiar, all reference points, all identity -- all viciously shattered in a few seconds. I couldn't even mourn the loss -- there was no one left to do the mourning. Up, up, out, out, eyes closed, I am at the speed of light, expanding, expanding, expanding, faster and faster until I have become so large that I no longer exist -- my speed is so great that everything has come to a stop -- here I gaze upon the entire universe."
actually upon rereading this description, my memory of the experience was so intense and all encompassing I had no idea what was happening, the come up with first signs was quick. I had rectally administered 100mg as well, that was a much more tame experience where I could still recognize the outside world but the experience was still all encompassing.
I don't remember anything of my room after first signs, suddenly I was everything and nothing at all simultaneously experiencing all of existence
there was nothing to observe, except for everything. I did not see CEVs or OEVs during the peak, it was very different than typical visual changes. it was more like the knowledge of the vision was transferred into my memory entirely bypassing visual circuitry. time did not pass, it all happened in the same instant. I was destroyed but it never happened at any particular point in time, it just always was