What is Changa Xanga is a smokable herb blend that combines a DMT extract preferably from a natural source such as chacruna (also known as Psychotria viridis shrub) or mimosa hostilis with an MAOI inhibitor. For the latter, the Banisteriopsis caapi ayahuasca vine is an especially popular choice. Those are the key ingredients, although changa makers around the world incorporate an endless variety of other vines and herbs into their unique recipes. How to use changa Unlike DMT, which is often vaporized or loosely based, changa is smoked like tobacco. A pipe is good for a smooth presentation.