etonogestrel/ethinyl estradiol-vaginal ring (cont.)
DRUG INTERACTIONS: Certain drugs can decrease the effectiveness of combination-type birth control by decreasing the amount of birth control 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 using this birth control patch. Do not use this hormone ring if you are also taking troleandomycin. Before using this product, tell your doctor of all prescription and nonprescription medication you may use, especially of: atorvastatin, ascorbic acid (vitamin C), acetaminophen, azole antifungals (e.g., itraconazole, ketoconazole), cyclosporine, corticosteroids (e.g., prednisolone), theophylline, temazepam, aspirin, morphine, clofibric acid, thyroid hormones, antidepressants (e.g., tricyclics), warfarin, insulin. This birth control device may interfere with the correct placement of a diaphragm. The use of a diaphragm as a back-up method of birth control is not recommended. Consult your doctor or pharmacist for more information. This product can affect the results of certain lab tests (e.g., blood tests such as glucose, clotting factors, triglycerides (fat), folic acid, or thyroid). Make sure laboratory personnel and your doctors know you use this product. 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.
- Hormonal Methods of Birth Control - Read about hormonal birth control methods, such as oral contraceptives, the patch, birth control injection, and vaginal ring. The hormones used in hormonal birth control are estrogen and/or progesterone.
- Pregnancy Planning - The goals of pregnancy planning are to create a healthy environment for the fetus and to prevent birth defects and other pregnancy related problems.
- Birth Control - There are a number of different methods of birth control to include: barrier methods, IUDs, hormonal methods, natural methods, and surgical sterilization. No birth control method, except abstinence, is considered to be 100% effective.
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