Taking medication is a common occurrence for many people, whether it is to soothe an aching head, regulate blood sugars, or to treat life threatening conditions, such as HIV or cancer. The reader will begin to understand how a drug molecule is made; the process that turns it into a medicine; the role the pharmacist has when dispensing that medicine; and what happens in the body when it is taken. Most importantly, the series shows how each of these aspects are integrated, reflecting the most up-to-date teaching practices. This book introduces the range of physiological processes occurring in the different body systems, and shows how they respond to drugs that are administered.