Problem: A nurse completes new hire paperwork and screening to begin working on a step down surgical unit. She receives a call from employee health that she has failed her drug screen and tested positive for opiates. The nurse states she is taking antibiotics for acute sinusitis and that's the reason for her failed drug screen. Which of the following antibiotics has this potential side effect? 1. Minocycline 2. Azithromycin 3. Cefepime 4. Ciprofloxacin