When dispensing a prescription, if the label reads "1 tab po qd," how many tablets should the patient take over a week?

The prescription instruction "1 tab po qd" translates to "1 tablet by mouth every day" (po stands for "per os," which means by mouth, and qd refers to "every day"). Therefore, if the patient is to take 1 tablet each day, over the course of one week, they would take 1 tablet for each of the 7 days.

Since there are 7 days in a week, the patient would take a total of 7 tablets during that time. This understanding is central to interpreting prescription directions correctly, ensuring that patients receive the proper dosage over a specified period. Hence, the correct response to the question is indeed the option reflecting a total of 7 tablets for the week.