I found this doing a search online. I am not connected with them and can not vouch for the accuracy of their information. Before anyone would think of doing anything like this, they would need to do their own research and talk with a health care provider knowledgeable in this issue. I found this page interesting though and wanted to share. Thank you.
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http://ec.princeton.edu/worldwide/default.asp
For example, in the USA...
Emergency Contraception in United States of America
Dedicated Products / Anti-Progestin
Take 1 pill within 120 hours after unprotected sex:
ella
Dedicated Products / Progestin Only
Take 1 pill within 120 hours after unprotected sex:
Next Choice One Dose (available from a pharmacist without a prescription)
Plan B One-Step (available from a pharmacist without a prescription)
Take 2 pills within 120 hours after unprotected sex:
Levonorgestrel Tablets (available from a pharmacist without a prescription)
Next Choice (available from a pharmacist without a prescription)
Oral Contraceptives used for EC / Progestin-Estrogen Combined
Note: in 28-day packs, only the first 21 pills can be used
Take 2 pills within 120 hours after unprotected sex and take 2 more pills 12 hours later:
Ogestrel
Take 4 pills within 120 hours after unprotected sex and take 4 more pills 12 hours later:
Cryselle
Enpresse
Jolessa
Levora
Lo/Ovral
Low-Ogestrel
Nordette
Portia
Quasense
Seasonale
Seasonique
Trivora
Take 5 pills within 120 hours after unprotected sex and take 5 more pills 12 hours later:
Aviane
Lessina
LoSeasonique
Lutera
Sronyx
Take 6 pills within 120 hours after unprotected sex and take 6 more pills 12 hours later:
Lybrel
Our country-by-country information for dedicated ECPs comes from non-governmental organizations, pharmaceutical companies, and reports from the field. Our information for regular oral contraceptives used as EC is primarily based on the 2002 Directory of Hormonal Contraceptives, published by International Planned Parenthood Federation (IPPF). We welcome additions and/or corrections. Please send comments to: ec3@opr.princeton.edu.