In the late 1970s the Shulgins introduced MDMA to Leo Zeff, a Californian psychotherapist who had developed LSD therapies in the 1960s when that drug was still legal.

• 上世纪七十年代后期，舒尔金荐MDMA与加利福尼亚之精神医师李敖泽夫，泽夫君曾于六十年代将LSD疗法发扬光大，其时毒品尚属合法。