What does qd mean in medication frequency?

What does qd mean in medication frequency?

• A. Once daily
• B. Four times a day
• C. Three times a day
• D. Twice daily

Answer: (A)

qd denotes quaque die, meaning every day. It indicates a single dose within each 24-hour period, usually taken at roughly the same time each day. This is why it is interpreted as once daily. For context, other common daily frequencies describe multiple doses per day: twice daily, three times daily, or four times daily. Some clinicians prefer writing "daily" or specifying an exact time to reduce the chance of misinterpretation.

qd denotes quaque die, meaning every day. It indicates a single dose within each 24-hour period, usually taken at roughly the same time each day. This is why it is interpreted as once daily. For context, other common daily frequencies describe multiple doses per day: twice daily, three times daily, or four times daily. Some clinicians prefer writing "daily" or specifying an exact time to reduce the chance of misinterpretation.