I am taking another medication/other medications. Will my medication(s) affect how Morning After Pill works?Updated 2 months ago

Some medications you are taking may reduce the effectiveness of Morning After Pill.  Examples of such medicines are bosentan, carbamazepine, felbamate, griseofulvin, oxcarbazepine, phenytoin, rifampin, St. John’s wort, topiramate, efavirenz, and lumacaftor. If you have concerns or are taking one of these medicines, ask your healthcare professional before using Morning After Pill.