Drug metabolism is a core area of pharmacology. Before any drug can be licensed it is essential to know how the body metabolises the drug, and the short and long-term effects it has on the body.  It is an area of rapid advancement, which brings together the fields of pharmacy, pharmacology and medicine. This new text provides a concise, user-friendly introduction to drug metabolism that is ideal for undergraduates. Focusing on a conceptual understanding  of the drug metabolism system, the book illustrates the basic mechanisms on how xenobiotics are detected, chemically modified and then eliminated from human systems.