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“The Morning After Pill” Vs. “The Abortion Pill:” How to Tell the Difference

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Pregnancy related image Photo: Getty Images

You’ve heard them mistaken for each other before. On the news, in social circles, and even in some medical arenas, emergency contraception is stigmatized, mislabeled, and misconstrued as an entirely different drug--"the abortion pill.” While they’re both used by women not wishing to be pregnant, the reality is that these are very different drugs, without much else in common. One acts to stop an already growing pregnancy (the abortion pill, RU-486, or mifepristone) and the other prevents pregnancy from ever occurring (emergency contraception). The confusion however, is not entirely the fault of anti-choice zealots, but instead, the result of a baseline lack of public awareness of birth control options in general.

Last week, when the United States Food and Drug Administration announced its approval of the new 5-day emergency contraception pill, Ella, scheduled for release in the U.S. late in the fall of 2010, it wasn’t long before anti-choice groups began condoning its use, and an under-informed audience began listening to these faulty words of caution.

The key to preventing this misunderstanding, is to remember that fertilization is not a one-step process. Sperm take hours, even days, to encounter an awaiting egg, and any disturbance along the way--impaired sperm motility, harsh intrauterine environments, blocked or congested fallopian tubes, or impenetrable eggs--can make the fertilization process increasingly difficult, even impossible. Despite stories about young girls getting pregnant after only their first sexual encounter, fertilization is truly a finicky process, where timing is everything and a multitude of conditions need to be right.

This is where the differences between the abortion pill and emergency contraception become unmistakably clear. Mifepristone works by stopping something that has already occurred. It’s an anti-progesterone, which means that it antagonizes progesterone’s stabilizing effect on the implanting embryo in the uterine wall. If the embryo’s surrounding sac can’t effectively attach to the inside of the uterus, then the embryo cannot continue to receive blood supply and grow.

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We value and respect our HERWriters' experiences, but everyone is different. Many of our writers are speaking from personal experience, and what's worked for them may not work for you. Their articles are not a substitute for medical advice, although we hope you can gain knowledge from their insight.