Order Entry and Processing
A prescription reads: "Levothyroxine 50 mcg, take i tab po qd." The pharmacy dispenses 90 tablets. How many days' supply does this represent?
- A30 days
- B90 days
- C180 days
- D45 days
Not A. 30 days assumes 3 tablets per day instead of 1.
B is right. "i tab po qd" means one tablet by mouth once daily, so 90 tablets ÷ 1 tablet per day = 90 days' supply. QD is an error-prone abbreviation, and writing "daily" is safer.
