A drug is a chemical which is given to people in order to treat or prevent an illness or disease. Drugs aresubstances that some people take because of their pleasant effects, but which are usually illegal. Clinicalpharmacy is a health science discipline in which pharmacists provide patient care that optimizesmedication therapy and promotes health, and disease prevention. Unique among medical texts, thisbook is a complete and concise guide to the core areas of medicine that also encourages thinking aboutthe world from the patient's perspective, offering a holistic, patient-centred approach. It includesinformation on an expanded number of conditions and the new biological therapies used in thetreatment of the diseases and injuries. Language of the book is simple. It consists of contributions madeby international experts. This book is truly indispensable companion for the practice of medicine. Thisbook will give immense pleasure to the reader and is a good companion to the students and researchscholars alike. Scientists and students actively engaged in this field will find this book full of crucial andunexplored concepts.