This revised fourth edition of "Drugs in Use" presents a series of clinical case studies to illustrate how pharmacists can optimise drug therapy in response to the needs of individual patients. Patient information is interspersed with questions and answers suitable for self-study or group discussion and a pharmaceutical care plan is included within each chapter. The cases included address situations which are commonly encountered or associated with particular difficulties in treatment individualisation. Those in which major advances in therapeutics have recently occurred are also covered. All case studies from the previous edition have been updated and revised, and new chapters have been included on the following: eczema; psoriasis; Crohn's disease; oncology; and, substance misuse. Translating the knowledge acquired during undergraduate and postgraduate pharmacy courses into the clinical skills required to optimise the therapy of patients can seem a daunting task. This book was conceived as a method of helping pharmacists and prescribers to 'bridge the gap' between the acquisition of theoretical knowledge about drugs and its practical application to individual patients. It will be an invaluable resource for pharmacy students, pre-registration pharmacists and practising pharmacists. It will also be a valuable resource for medical students and non-medical prescribers.