Jennifer takes birth control pills. Recently she was diagnosed with a urinary tract infection and is taking ciprofloxacin (Cipro). To maximize the therapeutic effects of both types of drugs, what should the nurse tell Jennifer?

A. Treat the urinary tract infection with another drug: This might be necessary if ciprofloxacin interacts significantly with birth control pills, but it's not the first line of action. B. Continue with both therapies simultaneously: Some antibiotics can decrease the effectiveness of birth control pills. It's important to advise using a backup method during and for a short time after ciprofloxacin therapy. C. Complete the ciprofloxacin therapy and use a backup method of contraception: This is the most appropriate advice. Jennifer should finish the antibiotic to treat the infection, but a backup method (like condoms) is needed to prevent pregnancy because ciprofloxacin might decrease the effectiveness of birth control pills. D. Abstain from sexual activity until the end of ciprofloxacin therapy: While this would be completely effective, it might not be realistic for everyone. Using a backup method offers protection while still allowing sexual activity.