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Drug Math
 This page was last updated on 15-Jun-02

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    Drug Math
rug math is a hugely important part of nursing, so it is critical to have your skills down pat.  Practice, practice, practice!  Not just to pass your exams or a class - practice because lives will depend on your skills in the not-so-distant future.  Many nursing programs require a 100% score on drug math tests before you are allowed to progress any further...and some schools will even give you the boot.  Harsh?  Nope - not at all.  There isn't room for errors when it comes to drug math.

To help you out, we've scouted some great internet resources you can use to supplement your studies:

This online tutorial hosted by the Alamo Community College District covers common conversion factors and equivalencies, abbreviations, ratios and proportions, IV and titration, and pediatric pharmacology math.  Once you have completed the tutorial, there are online quizzes you can take, with automatic grading.

"Most dosage calculations require more than one equation. For example, a health care provider may order a drug in tablet, capsule, or liquid form in grains, but it may be available only in milligrams. When this happens, you need to convert from one measurement system to another before deciding how much medication to administer."  This article takes a look at how to perform two-step dosage calculations.

This review comes from the University of Kansas School of Nursing and covers parenteral, nonparenteral and intravenous medication calculations, as well as pediatric dosage calculations.


Drug Calculations for Nurses generates drug calculation quiz questions relating to metric conver-sions, tablet dosages, fluid dosages, intravenous flow rates and intravenous simulations. Questions are randomly generated based on a database of drugs. Help & solutions are included.

More resources will be added as we find them.  If you know of a great online resource for drug math,
let us know!  E-mail your suggestions to

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