If you need a 500 mg dose and only have 250 mg tablets, how many tablets should you administer?

To determine the correct number of tablets to administer for a required 500 mg dose using 250 mg tablets, you can perform a simple calculation. Since each tablet contains 250 mg, you need to figure out how many of these tablets will together equal 500 mg.

You can do this by dividing the total required dose (500 mg) by the strength of each tablet (250 mg):

500 mg ÷ 250 mg/tablet = 2 tablets.

Thus, to achieve the necessary 500 mg dose, you will need to administer 2 tablets. This calculation clearly demonstrates the correct answer as the number of tablets needed to fulfill the 500 mg requirement is 2.