Reply #71: Note that the dose listed needs to be taken TWICE, 12 hours apart:

[kath]

"This regimen uses two doses of oral contraceptive pills that combine estrogen and certain progestin hormones (FDA, 1997). It can reduce the risk of pregnancy if taken within 120 hours (five days) of unprotected intercourse. The treatment is more effective the sooner it begins (Ellertson, et al., 2003; "FDA Approves...", 1999; Rodrigues, et al., 2001; Stewart, et al., 2004). (Because the emergency contraceptive pills (ECPs) have a five-day window of effectiveness, the popular term "morning-after pill" is misleading.) The doses are taken 12 hours apart. Various prescription products contain the appropriate hormone combination and can be used as ECPs:
Alesse® Wyeth-Ayerst 5 pink pills
Aviane® Barr 5 orange pills
<etc, from above post>"

Back in the days before Plan B, this is what we prescribed in the ER.

Note that, since nausea and vomiting are common side effects, the use of an anti-emetic drug can be helpful:
"Combination hormone ECPs induce nausea in 30-50 percent of women, and vomiting in 15-25 percent of women. Anti-nausea or anti-emetic medications taken one hour before ingesting ECPs may reduce these side effects."
<from the Planned Parenthood link, above>