How often should a medication labeled with "Q 4H" be administered?

A medication labeled with "Q 4H" indicates that it should be administered every four hours. The abbreviation "Q" stands for "quaque," which means "every," and "4H" specifies the interval of four hours between administrations. This dosing schedule is intended to maintain a consistent level of the medication in the patient's system, which is particularly important for drugs that require steady levels for effectiveness.

In terms of medication administration, understanding such abbreviations is crucial for ensuring proper timing and dosage. This practice helps to optimize therapeutic outcomes and minimize the risk of complications associated with underdosing or overdosing. The other options suggest different frequencies that do not match the specified four-hour interval, thus making them unsuitable choices.