K.R. is a 30 year old female patient whose father was diagnosed with active TB. KR's physician recommended that KR take a prophylactic antibiotic for 6 months, and she was placed on rifampin (Rifadin) KR calls the office today and is quite anxious b/c her urine was bright orange when she voided this morning.
1. What is the cause of the orange urine and should KR be concerned?
2. KR reads that antibiotics may cause birth control pills to be less effective and she asks the nurse if this is the case with rifampin?
3. Should KR be concerned about the effectiveness of her birth control pills?
4. What other patient teaching should be included with this medication?