Calculating Drug Dosages
Castillo Werner-McCullough · 3rd Edition · ISBN 9781719647199 · F. A. Davis Company
Complete chapter-by-chapter study guide aligned with Calculating Drug Dosages (3rd Edition). Includes summaries, learning objectives, and NCLEX-style practice questions for all 21 chapters.
Overview
Calculating Drug Dosages (3rd Edition) by Castillo and Werner-McCullough is a focused dosage-calculation text used across nursing programs, where safe medication math is a non-negotiable skill. This study guide is built to follow the textbook chapter by chapter, from safety in medication administration and reading the drug label through the metric and household systems and the major calculation methods, including ratio and proportion, dimensional analysis, and the formula method. It then walks through oral and parenteral dose calculations, syringes and needles, reconstituting powdered medications, insulin, IV infusion and completion times, IV push, safe-dose verification, titration, intake and output, and pediatric and older-adult considerations. The aim is to help you review high-yield methods and practice the calculation types the way they appear on dosage-calculation tests, which many programs require you to pass at high accuracy, without rereading the whole book.
Aligned with nursing dosage-calculation courses and the high-accuracy medication-math proficiency tests many programs require, with methods that also support safe practice and the NCLEX.
What you'll learn
The major topics this guide walks you through, matched to the textbook's order:
- Safety in medication administration
- Reading the drug label
- The metric and household systems
- Ratio and proportion methods
- Dimensional analysis
- The formula method
- Oral medication dose calculations
- Parenteral dosage calculations
- Reconstituting powdered medications
- Insulin administration
- IV infusion and completion times
- Safe-dose verification
- Titration of IV medications
- Pediatric and older-adult dosing
Need the textbook itself?
Calculating Drug Dosages by Castillo and Werner-McCullough, published by F. A. Davis Company, is a practical dosage-calculation text known for teaching multiple calculation methods and emphasizing medication-administration safety.
Buy new, rent, or find a used copy of Calculating Drug Dosages below. Make sure you get the 3rd Edition (ISBN 9781719647199) — editions differ, so double-check before you order. We earn a small commission if you buy through these links — your price is unchanged.
Chapters covered
Every chapter below is fully covered in the PDF — summary, learning objectives, key terms, and NCLEX-style practice questions with rationales.
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What exactly do I get?
A printable PDF study guide covering all 21 chapters of Calculating Drug Dosages (3rd Edition) — chapter summaries, learning objectives, and NCLEX-style practice questions with rationales. One file, lifetime access, no subscription.
How soon will I get it?
Instantly. A download link appears on screen and lands in your inbox the moment your payment clears.
Does it cover dimensional analysis and the formula method?
Yes. It reviews ratio and proportion, dimensional analysis, and the formula method so you can use whichever approach your program teaches.
Will it help me pass my dosage-calculation proficiency test?
It reviews the calculation types and safety checks those tests emphasize, but you should also work plenty of practice problems to reach the required accuracy.
Does it match the 3rd edition?
Yes. It is aligned to the 3rd edition and follows its chapter structure.
Will it match my edition?
This guide is built around the 3rd Edition. If your class uses a different edition, chapter numbering may shift slightly, but the topics and learning objectives are usually unchanged.
Do I still need the textbook?
The study guide is a companion, not a replacement — it helps you study efficiently and review fast, but you'll still want the textbook for full depth and any assigned readings. You can buy new, rent, or find a used copy through the price links on this page.
What if it is not what I expected?
Every purchase is backed by a 14-day money-back guarantee — email us within 14 days for a full refund.
Is this a test bank or copied from the textbook?
No. This is an original study guide written to align with Calculating Drug Dosages — summaries, objectives, and practice questions with rationales, not a reproduced publisher test bank or copied text.
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About this study guide
This is an original study guide written to align with the topics and learning objectives covered in Calculating Drug Dosages (3rd Edition) by Castillo Werner-McCullough. It is not affiliated with, endorsed by, or licensed by F. A. Davis Company or the textbook's authors. All summaries, practice questions, and explanations are independently authored.