This is an innovative drug calculation work-text designed for students in professional and vocational schools of nursing and for nurses returning to practice after being away from the clinical setting. It includes information on ratio and proportion, formula and dimensional analysis methods of drug calculation, and numerous practice problems. This text should also be of interest to students who need extensive math review in addition to drug calculations content. The table of contents has been reorganized to create a more logical flow for learning. A new chapter on Critical Care IV Flow Rates has been added to address medication administration to critically ill patients. This new edition also includes more practice problems on calculations for pediatric patients. Important features such as worksheets, posttests, and the comprehensive posttest have all been retained. The full-color drug labels continue to provide a more realistic representation of medication administration.