A stylish, in depth look at the renaissance in psychedelic drug research in light of current scientific, medical and cultural knowledge. The film explores these socially taboo substances as adjuncts to psychotherapy, as crucial but neglected medicines, and as technologies of consciousness. From Neurons to Nirvana: The Great Medicines features interviews with some of the world's foremost researchers, writers, and pioneers in the growing field of psychedelic psychotherapy. These radical healers and dissenters are using everything from ancient concoctions to newly created designer molecules to the once demonized psychedelic drugs of the 1960s. They argue convincingly for the legal right to incorporate these substances into therapeutic practice.