Levonorgestrel is an emergency contraception that can be used after unprotected sex, or in cases when contraception has failed.

Levonorgestrel 1.5mg, commonly known as the morning-after pill, is a highly effective emergency contraceptive. It provides a crucial second chance to prevent pregnancy after unprotected intercourse or contraceptive failure. It's designed to be taken as soon as possible after such events, ideally within 12 - 24 hours and no later than 72 hours.

Remember, Levonorgestrel is not intended to be used as a regular form of contraception but as an emergency measure. While it is generally well-tolerated, it's essential to be aware of the potential side effects and what to do if they occur. Also, remember that while Levonorgestrel effectively prevents pregnancy, it does not offer protection against sexually transmitted infections.