A nurse is preparing to administer vancomycin IV to an adult client. The client asks the nurse if the medication can be given 2 hr earlier. Which of the following statements should the nurse make?

A. “I can start the medication 30 minutes earlier.”: Most facilities allow a 30-minute window before or after the scheduled administration time for IV antibiotics like vancomycin. Administering it more than 30 minutes early may interfere with therapeutic drug levels and proper dosing intervals. B. “I have up to 2 hours after the usual scheduled time to give you this medication.”: While some medications may allow a late administration window, vancomycin requires precise timing to maintain therapeutic levels and prevent resistance. Delays beyond 30 minutes are generally not appropriate. C. “I can adjust the time and schedule for when it's convenient for you.”: Medication schedules, especially for antibiotics, are based on pharmacokinetics and infection control. Altering times for convenience can compromise treatment effectiveness and safety. D. “I can infuse the medication at a faster rate.”: Infusing vancomycin too quickly increases the risk of adverse reactions such as Red Man Syndrome. It must be administered over a prescribed minimum time to reduce complications.