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RU 486(är′yo͞o fôr′ā-tē-sĭks′)
An oral drug that can terminate early pregnancy by blocking the action of progesterone.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
mifepristoneAn antiprogestin used with misoprostol, a PGE1 analogue, as a morning-after contraceptive for early pregnancy termination.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
RU 486Population control A synthetic 19-norsteroid abortifacient with potent antiprogestational and antiglucocorticoid properties Side effects Minimal pelvic pain, fatigue, nausea, headache; used for emergency postcoital contraception Potential uses for RU 486 Inhibition of ovulation, blocking of secretory endometrium, induction of labor, treatment of endometriosis and breast CA. See Contragestive. Cf Morning-after pill.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.