-Aprepitant
-Armodafinil
-Barbiturate medications, such as phenobarbital or primidone
-Bexarotene
-Bosentan
-Carbamazepine
-Certain antivirals for HIV or hepatitis
-Felbamate
-Griseofulvin
-Modafinil
-Oxcarbazepine
-Phenytoin
-Rifabutin
-Rifampin
-Rifapentine
-St. John's wort
-Topiramate

They need to know if you have or ever had any of these conditions:
-An unusual or allergic reaction to levonorgestrel, other medications, foods, dyes, or preservatives
-Pregnant or trying to get pregnant
-Breast-feeding

Your period may begin a few days earlier or later than expected. If your period is more than 7 days late, pregnancy is possible. See your care team as soon as you can and get a pregnancy test.
Talk to your care team before taking this medication if you know or suspect that you are pregnant. Contact your care team if you think you may be pregnant and you have taken this medication.
If you have severe abdominal pain, you may have a pregnancy outside the womb, which is called an ectopic or tubal pregnancy. Call your care team or go to the nearest emergency room right away if you think this is happening.
Discuss birth control options with your care team. Emergency birth control is not to be used routinely to prevent pregnancy. Be sure to use your regular birth control method right away, or start one, if you do not have a regular birth control method already.

Keep out of the reach of children and pets.
Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medication after the expiration date.