DMT is made in the pineal gland and the lungs of humans and animals and primarily released during birth, death, orgasm and spiritual experiences like breath work and meditation.
Dimethyltryptamine(DMT), is also derived from various plants including chacruna, mimosa, virola, psychotria, desmodium, and acacia just to name a few. 5-MeO-DMT is a variant that comes from the glands of a special Sonoran Desert Toad.
DMT is extracted as a crystal and contains pieziochromatic properties, which means that it can release any color of the rainbow. This is why DMT experiences are neon and colorful. Just as a color is an energy or vibration, these colorful frequencies are around us at all times, but the two eyes do not normally have access to these realms, and through the release of DMT from the pineal gland these experiences may be had.
Ayahuasca is a brew that contains DMT, this brew is made from a leaf(commonly chacruna) and a vine called B. Caapi(Banisteriopsis Caapi). The Vine is a natural MAOI(monoamine oxidase inhibitor) and the leaf is what contains the DMT. Monoamine oxidase is a enzyme that breaks down serotonin, so with the vine in one's system they have more access to serotonin than normal which can elicit very loving experiences when accompanied with the DMT journey.
Is DMT addictive? Well, the true answer is that anything can be addictive. It all depends on the intention when working with it. But commonly, most people who work with DMT use it to break addictions such as drugs and alcohol, and to see their self and their life more clearly.
DMT activates experiences very similar to the near death experience, where one's life flashes before their eyes and they are able to learn great things about how they are showing up in the world. This is how DMT can be life changing for some people, but the risk for some people is that after their ceremony they go back into their normal world without making any healthy changes, and fall back into the same patterns.
There is no such thing as a "magic pill", so as with all things, if you want your life to change for the better you must also put in your work personally. DMT while accompanied with prayer and clear intention has the potential to awaken people and change their life for the better. But if used hazardously or irresponsibility, as with anything, can have a negative effect. It shows up for you, how you show up for it.