Cerazette Drug Interactions

Taking other medicines: The patient should tell the doctor or pharmacist if she is taking or has recently taken any other medicines or herbal products, including medicines obtained without a prescription. The patient should also tell any other doctor or dentist who prescribes another medicine (or the pharmacist) that she uses Cerazette.
Some medicines may stop Cerazette from working properly. These include medicines used for the treatment of: epilepsy (e.g., primidone, phenytoin, carbamazepine, oxcarbazepine, felbamate, topiramate and phenobarbital); tuberculosis (e.g., rifampicin, rifabutin); HIV infection (e.g., ritonavir, nelfinavir, nevirapine, efavirenz); Hepatitis C virus infection (e.g., boceprevir, telaprevir); other infectious diseases (e.g., griseofulvin); high blood pressure in the blood vessels of the lungs (bosentan); stomach upset (medical charcoal); depressive moods (the herbal remedy St. John's wort).
If the patient is taking medicines or herbal products that might make Cerazette less effective, a barrier contraceptive method should also be used. Since the effect of another medicine on Cerazette may last up to 28 days after stopping the medicine, it is necessary to use the additional barrier contraceptive for that long.
Cerazette may also interfere with how other medicines work, causing either an increase in effect (e.g., medicines containing ciclosporine) or a decrease in effect (e.g., lamotrigine).