What does QID refer to in medication dosage?

QID stands for "quater in die," which is Latin for "four times a day." This term is used in medical prescriptions to indicate how often a medication should be taken within a 24-hour period. Understanding Latin abbreviations is essential in medical settings, as they convey clear and concise information regarding dosing schedules. When a medication is prescribed QID, it is intended to be administered at regular intervals throughout the day, which typically means once in the morning, once in the afternoon, once in the evening, and once before bedtime. This approach is often used for medications that require consistent levels in the bloodstream or to effectively manage symptoms throughout the day.