This new edition of Drug Calculations for Nurses teaches healthcare professionals how to perform drug calculations with confidence and competence. It provides step-by-step guidance to carry out accurate drug calculations, with units and drug strengths clearly explained. This bestselling pocket-size book begins with the basic mathematical skills required to perform calculations, including tips on estimating answers. It then covers drug strengths and concentrations, dosage calculations, IV infusion therapies, and pharmacodynamics and pharmacokinetics. Separate chapters focus on children, adults and the elderly, addressing specific challenges encountered in these populations, with new content on pregnancy, and renal and liver function. Helpful worked examples, key points, and objectives are included in every chapter, and this new edition includes more calculations for prescribing and patient-focused scenarios. The companion website provides a comprehensive test bank, with a pre-test and revision test to identify strengths and weaknesses, along with additional practice questions for readers to test themselves on. Designed for students and practitioners in nursing, midwifery and allied health, this textbook enables readers to improve their numeracy skills for clinical practice and develop their understanding of the broader context for these calculations.