- Women who take Ella after unprotected sex have about a one in 50 chance of becoming pregnant, compared to a one in 20 chance without.
- It works just as well on the fifth day as the first day after sex, unlike Plan B, which decreases its effectiveness the longer you wait.
- It's available by prescription only.
- It works by stopping the effects of female hormone progesterone, but some are saying it works similarly to the abortion pill (RU-486) by making the womb "less hospitable to a fertilized egg."
- Side effects included headache, nausea, abdominal pain, painful menstrual cramps, fatigue, and dizziness.