Incube for many parents and "pillal of happiness" for their children, ecstasy became in the 1990s the favorite drug by nightclubs and "raves".But it is not the psychedelic substance that many believe: it is a drug, whose liberating effects make it a coadjuvant of undoubted interest in psychotherapy, while undesirable use for hedonistic purposes can be devastating.The book is divided into two parts:the first explains the nature and history of the origins (1912), clarifying the differences between the drug used for therapeutic purposes and the pills of saturday night;the second describes the potential of the substance in the psychoanalytic field, claiming the beneficial effects if administered with scientific criteria.