For most people, 30mg of DMT taken orally with 5 grams of syrian rue will do close to nothing... if you don't believe me. Do some tests!
Take 30mg of DMT with some GOOD ayahuasca vine and it might begin to do some good things...
The lit on this subject is based around redundant hypothesis by one Mr J. Ott...
60mg is about where things get interesting for most... 150mg is what most do need to get to the really good stuff, others 200mg, and some even need 300mg to get really visionary.
Yet, some of my most satisfying journeys have been with 80mg of clear crystal and ayahuasca vine as thick as your thigh, from ecuador.
I recently had just ayahuasca vine... from a really good source, after a week long fast, and it was fully potent and visionary, with the plant spirit joking and communicating with me the whole time.
Julian.