The Pineal Gland is the most important gland in the entire body. It's located near the center of the brain, between the two hemispheres. So what's the point? It naturally produces serotonin and melatonin which is also be labeled as DMT (dimethyltryptamine). However, DMT is illegal in the U.S. Why? It is considered the most hardcore psychedelic drug known to man. But why is it illegal if our Pineal Gland naturally produces it? That my friend, is a very good question.