How does it work?
The Morning-After Pill works in the same way as other hormonal methods of birth control, by suppressing ovulation if it has not yet occurred, the drugs work by making the uterus inhospitable to the embryo, preventing implantation and causing the embryo to be expelled (aborted). The drug also interferes with the natural movement of the ovum.

How effective is it?
Your risk of becoming pregnant during your most fertile days (halfway between two menstrual periods) is as high as 30%. Using the Morning-After Pill decreases your chance of becoming pregnant by about 75%.

What is involved?
Two doses of pills, taken 12 hours apart.

What are the health risks and side effects?
Common side effects are nausea and vomiting. Health risks include increased risk of ectopic (tubal) pregnancy, which can be life threatening.

What main chemicals are used?
High doses of estrogen/progestin pills (oral contraceptives).

Should I come in for a pregnancy test?
Yes, you should follow up with a pregnancy test 7-10 days after using the morning after pill. If your pregnancy has implanted, it will not be aborted.