Pharmaceutical drugs are chemical compounds that are used for treating, preventing, curing or diagnosing a disease. These can be classified into groups of related drugs which have similar chemical structures, mechanism of action and target disease. Drug design is the process by which new medications are invented on the basis of a biological target. Usually these are complementary in shape and charge to a biomolecular target. A drug therefore binds to it and acts to activate or inhibit the function of the biomolecule thus conferring a therapeutic benefit to the patient. Drug design can be computer-aided or structure-based. Formulation involves the preparation of a drug such that it is stable and acceptable to a patient. The drug is mostly formulated into a tablet or capsule form. The field involved with the design and formulation of medicines is known as pharmaceutics. This book provides comprehensive insights into the field of pharmaceutics. It discusses the fundamentals as well as modern approaches in the design and formulation of medicines. It aims to equip students and experts with the advanced topics and upcoming concepts in this field.