Formulation, Characterization and Systems of Drug Delivery - Hardcoverby Joy Bartlett (Editor) Drug delivery is the method of administering a pharmaceutical compound to achieve a desired therapeutic effect in humans or animals. The principles associated with the route of administration, drug preparation, metabolism, site specific targeting, and toxicity are used in the process of drug delivery. The primary focus of these principles is to optimize safety and efficacy in order to improve a patient's convenience and