Just like Postinor-2, Glostinor-2 is an emergency contraceptive only. Glostinor-2 is not intended as a regular method of contraception.
It is used to prevent pregnancy when taken within 72 hours of unprotected intercourse.
It is estimated that Glostinor-2 will prevent 85% of expected pregnancies. 95% of expected pregnancies will be prevented if taken within the first 24 hours, declining to 58% if taken between 48 hours and 72 hours after unprotected intercourse.