I've never liked to combine psychedelic substances. Of course I like any kind of caapi/dmt combo I've tried. Vaped DMT at the peak of an acid trip can be amazing. Low doses of DMT for me. 10-15mg in a GVG.

I recently discovered what burnt posted above to be a combination I really love. Ketamine and DMT is amazing. Here's how I do it. IM ketamine 100-120mgs then I lay down. As I'm coming out of the hole, I wait for the perfect time and vape 20mgs of DMT. Ketamine does seem to greatly potentiate and lengthen the DMT experience. They get along very well. It gives me the impression that I've discovered a new and important paradigm. That I've discovered the key to the universe every time. Of course, that feeling fades, but I do think that there is plenty to be learned from the combination.

One of these days, if I ever have sufficiently clean DMT, I'd like to IM both substances at once. I doubt it will ever happen though.