Why not give plain rue tea a try? Brew it exactly as you brew tea. Add hot water to 2-3 grams of ground rue seeds. Don't boil it and don’t add any acids or anything else. Let it steep for 15 minutes or so. Strain it, removing all the seed solids. Then add citric acid and freebase DMT. That's the method that produces the cleanest experience for SWIM. It's not as good if you boil the rue or add acid to the tea while brewing it. Boiling it or adding acid is a sure way to make inferior rue tea that causes more side effects. Brewed as plain tea, it’s much better than using caapi, in terms of side effects. The trip is different from caapi of course.
Plain rue tea contains harmine, harmaline, and sometimes a ton of harmalol, as well as some other actives.