Which abbreviation indicates "four times a day"?

The abbreviation that indicates "four times a day" is represented by "q.i.d.," which stands for "quater in die" in Latin, translating to "four times a day" in English. This term is commonly used in medical prescriptions to specify that a medication should be taken four times during the day, ensuring a consistent and effective dosing schedule.

While there are other common medical abbreviations, they describe different dosing schedules. For example, "t.i.d." means "three times a day," and "b.i.d." signifies "twice a day." The abbreviation "q.4h" typically refers to administering medication every four hours, which results in a similar frequency but does not specifically categorize it as four times a day in the way that "q.i.d." does. Understanding the nuances of these abbreviations is crucial for proper medication management in clinical settings.