I took a 100ug dose of lsd the day after a heavy harmala/light acacia brew the other week, which at about 2 hours into the acid trip I realized the harmalas "never really went away"... it was perhaps 12-16 hours in between. So the acid kind of carried the brew into the next stage...
Acid doesn't seem as straightforwards as simple tryptamines in terms of energy. There's just something about how it can bounce different stuff around, which the harmalas would potentiate and increase the time of these 'secondary' psychedelic effects, leaving me feeling a little unnatural and jangly. It definitely has a more stimulating edge, which I didn't find to match up very well with the harmalas.
Altogether I found the experience very grating, but likewise I could see how someone else could enjoy it. Harmalas are a powerful 'full-body' force, as is the acid imo, so combined it really moves the body energies in wild directions. dmt/nmt doesn't feel nearly as pushy in the body, it's more fluid to me, at least in the lower-dose end of the spectrum. At one point I was feeling these tremors build up in my limbs, and then dissipate after 5 seconds or so, disturbing nonetheless.
I'd say the harmalas (after quite a few hours) potentiated the acid to at least 1.5 times what it should have been, but that is hard to gauge since I didn't measure the lsd on a scale or anything.
Oh one other thing, there's a sort of ancestral presence with lsd+harmalas. Just feels different, like there's a whole new dimension added to the acid, a little scary to me honestly, felt like I was seriously tinkering with the subtle mechanics of my brain. Gracie and zarkov have written about the '
ancestral presence'.