Now in its Fifth Edition, this book presents a systematic approach to solving dosage calculation problems using dimensional analysis. The book uses the simple-to-complex approach, focusing on understanding how to problem solve, and is, therefore, divided into four sections: Clinical Calculations introduces the concepts and includes a comprehensive pre-test; Practice Problems allows students the opportunity to refine their skills; Case Studies (45) helps the student relate dosage calculations to real clinical situations; and, a Comprehensive Post-Test contains 25 questions allowing the instructor to assess the student's mastery of solving clinical calculations using dimensional analysis.