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  • Read each problem carefully. Write out the dimensional analysis on a sheet of paper.
  • Click the Solution button when you are ready to check your work.
  • Click the Next button to see another problem.
  • Try to work the problems without using a calculator.


You are to administer Digoxin 0.375 mg PO to a patient. On hand are 0.25 mg tablets. You will administer _____ tablets.

Step 1: Set up the conversion ratios:

0.375 mg x 1 tablet
1 0.25 mg

Step 2: Cancel like units:

0.375 mg x 1 tablet
1 0.25 mg

Step 3: Complete the math:



1 tablet

= 1 1/2 tablets
1 0.25

These drills are intended to be supplementary resource for nurses, medical assistants, and other allied health professionals.  It is not intended to be a primary source of information for unlicensed or informal caregivers. In such instances, detailed information on dosages must be obtained from a physician or pharmacist.

Note: These examples are computer generated in order to provide the widest variety of dosage calculations. If you find any erroneous or misleading solutions, please contact us immediately with a clear description of the exercise.

David L. Heiserman, Editor

Copyright   SweetHaven Publishing Services
All Rights Reserved

Revised: June 06, 2015