Levonelle 1500 is anemergency contraceptive that can be used within 72hours (3days) of unprotected sex or if your usual contraceptive method has failed.
It is about the following cases:
-No contraception was used during the sexual intercourse.
-The contraception measure was used incorrectly, for example as if a condom was penetrated, slipped away or used in a wrong way, if vaginal pessary or diaphragm changed position, burst, was broken or taken out ahead of time, in the case of a failed interruption during coitus interruptus (e.g. sperm ejaculated in vagina or on external genitalia).
Levonelle 1500 contains a synthetic hormone like active substance called levonorgestrel. It prevents about 84% of expected pregnancies when you take it within 72hoursof having unprotected sex.
It will not prevent a pregnancy every time and is more effective if you take it as soon as possible after unprotected sex.
It is better to take it within 12hours rather than delay until the third day.
Source: Patient Information Leaflet