Final answer:
To administer a 1000 mg dose of acetaminophen (Tylenol), 2 tablets are needed based on 500 mg tabs available.
Step-by-step explanation:
The physician has ordered acetaminophen (Tylenol) E.S. 1000 mg po q day, and the available tabs are 500 mg each. To determine the correct dose to administer, we need to find out how many 500 mg tabs are needed to reach 1000 mg.
Since each tab is 500 mg, we can administer 2 tabs to achieve the prescribed dosage of 1000 mg.
Therefore, the correct dose to administer is 2 tablets.