Medication that is given "q4h" should be administered every:

The abbreviation "q4h" stands for "quaque 4 hora," which is a Latin term meaning "every four hours." This notation is commonly used in medical settings to specify the frequency at which medication should be administered. Therefore, when medication is prescribed to be given "q4h," it means that the patient should receive the medication once every four hours throughout the day.

Understanding this terminology and its implications on medication scheduling is crucial for proper patient care and management. It helps ensure that patients receive their medications consistently, maintaining the desired therapeutic effects and avoiding potential complications that can arise from missed doses or incorrect timing. In contrast, the other options either misinterpret the frequency or suggest a different schedule entirely.