Seriously. Did you not ask or read the package it came in? One tablet within 72 hours of having unprotected sex.
By the way, this is not birth control. You and your partner both need to use protection each and every time you have sex, unless you like having children. It's not good for your body to use this pill each time you have unprotected sex because you were not motivated to properly care for your body before you have intercourse.
