Drug information provided by: IBM Micromedex
It is very important that your doctor check you closely to make sure this medicine is working properly and does not cause unwanted effects.
Although you are using this medicine to prevent pregnancy, you should know that using this medicine while you are pregnant could harm the unborn baby. Your doctor may give you a pregnancy test before you start using this medicine to make sure you are not pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.
Call your doctor right away if you have severe lower stomach pain 3 to 5 weeks after taking this medicine. You may have a pregnancy outside of the uterus (womb), which is called an ectopic pregnancy. An ectopic pregnancy can be a serious and life-threatening condition. It can also cause problems that may make it harder for you to become pregnant in the future.
This medicine may make your next monthly period earlier or later than expected by a few days. If your next period after taking this medicine is more than 1 week late, check with your doctor right away for a pregnancy test.
Do not use any additional emergency pills (eg, levonorgestrel) within 5 days after taking this medicine.
Your regular birth control method including birth control pills, vaginal ring, or patch may not work as well while you are using this medicine. You should not start taking hormonal contraceptives until at least 5 days after using this medicine and you must use a barrier method, including a condom with spermicide, diaphragm, or contraceptive foam or jelly, until the next menstrual cycle.
This medicine will not protect you from getting HIV/AIDS or other sexually transmitted diseases. If this is a concern for you, talk with your doctor.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal (eg, St. John's wort) or vitamin supplements.