Christiane Northrup, MD: Ella, Week After Birth Control Pill: A Boon for European Women, But Will It Make It to America?
EllaOne is comprised of ulipristal acetate, an antiprogesterone drug that prevents pregnancy by delaying ovulation. Though ulipristal acetate has similarities in chemical action to mifepristone -- also known as RU 486 -- it is not intended for use as contraception or as a method of terminating an ongoing pregnancy. Clinical trials of both Plan B and Ella, published recently in the Lancet, showed that Ella prevented twice as many unwanted pregnancies as Plan B.
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