Certified Paraoptometric (CPO) Practice Exam 2026 - Free Paraoptometric Practice Questions and Study Guide

"Qd" stands for "every day" in medical prescriptions, derived from the Latin phrase "quaque die." This abbreviation is commonly used in clinical settings to indicate that a medication should be administered once daily. This clarity is vital in ensuring that patients adhere to their prescribed treatment regimens accurately, as it helps prevent potential issues related to medication misunderstanding.

The options that refer to other frequencies, such as twice a day, three times daily, or four times a day, are associated with different terms, such as "bid," "tid," or "qid," respectively. Thus, while "Qd" effectively signifies "every day," the other abbreviations clearly define different dosing schedules.