How do medicines work? How do they interact with the body? What do I need to know for my nursing studies and practice? This book introduces the principles and practice of pharmacology in clear and simple terms. It follows the journey that medicines take in the body, explaining the main pharmacokinetic stages from the site of drug administration, through to metabolism and excretion, and considers the principles of drug action. Using straightforward language and assuming no prior knowledge of related anatomy and physiology, it builds your understanding before ending in a chapter of case studies, illustrating how the pharmacological principles you've learned apply to everyday nursing scenarios. It is the ideal introduction for all pre-registration nursing students beginning their journey towards future prescribing roles.