Mifegyne References Mifegyne drug Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: mifepristone…various other names, including RU-486, Mifegyne, and Mifeprex. Read More…various other names, including RU-486, Mifegyne, and Mifeprex. Read MoreRU-486…1999 under the trade name Mifegyne and in the United States in 2000 under the trade name Mifeprex. See also mifepristone. Read More…1999 under the trade name Mifegyne and in the United States in 2000 under the trade name Mifeprex. See also mifepristone. Read More