Changa includes rima (hamalas from b.capii) and lasts around an hour if good. And No nausia or effect from food.
I used to have a book about ayahusca-like formulations, using plants from various continents. But I've forgotten the name. Basically, many plants contain DMT, and many others contain MAO inhibitors. Also, I believe that one can combine some MAO inhibiting antidepressants, such as selegiline, with DMT.