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levonorgestrel/ethinyl estradiol extended cycle (cont.)

DRUG INTERACTIONS: This drug should not be used with the following medications because very serious interactions may occur: troleandomycin. If you are currently using any of these medications, tell your doctor or pharmacist before starting this birth control pill. Certain drugs can decrease the effectiveness of combination-type birth control pills by decreasing the amount of birth control pill hormones in your system (impaired enterohepatic recirculation or hepatic induction). This can result in pregnancy. Consult your doctor or pharmacist for details. Drugs that may cause this effect include: many antibiotics (e.g., cephalosporins, chloramphenicol, macrolides, penicillins, tetracyclines, sulfas), aprepitant, bexarotene, bosentan, dapsone, griseofulvin, certain HIV protease inhibitors (e.g., amprenavir, nelfinavir, ritonavir), modafinil, nevirapine, rifamycins (e.g., rifampin), many seizure medications (e.g., barbiturates, carbamazepine, phenytoin, primidone, topiramate), St. John's wort. Ask your doctor if you should use additional reliable birth control methods while taking any of the drugs mentioned above while also taking birth control pills. Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription products you may use, especially of: cyclosporine, corticosteroids (e.g., prednisolone), theophylline, beta-blockers (e.g., metoprolol), thyroid hormones, temazepam, aspirin, morphine, clofibric acid, acetaminophen, ascorbic acid (vitamin C), atorvastatin, azole antifungals (e.g., itraconazole, ketoconazole). This product can affect the results of certain lab tests (e.g., thyroid). Inform all laboratory personnel that you use this drug. Do not start or stop any medicine without doctor or pharmacist approval.




Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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