The document discusses pharmacy and drugs. Pharmacy is defined as the science and art of manufacturing, packaging, distributing, storing, dispensing, and using drugs. Drugs are chemical substances that can alter physiological functions in the body, such as digestion or circulation, and are used to treat diseases, prevent diseases, and aid in diagnosis. For a drug to be developed into a successful medicine, its physical, chemical, pharmacological properties and methods of synthesis must be understood, along with its clinical indications, side effects profile, and interactions with other drugs and food.