The field of drug delivery has evolved significantly from simple conventional dosage
forms to advanced systems designed to improve therapeutic efficiency, safety, and
patient compliance. Modern drug delivery focuses not only on administering drugs
but also on controlling the rate, time, and site of release to achieve optimal clinical
outcomes.
This book provides a comprehensive overview of both fundamental and advanced
aspects of drug delivery systems. It begins with the evolution of drug delivery and
the basics of oral drug administration, including gastrointestinal physiology, drug
absorption, and factors influencing bioavailability. It further explores novel oral
systems, modified release technologies, gastro-retentive and colon-targeted systems,
and targeted drug delivery approaches.
Special emphasis is given to nanocarriers, brain and pulmonary drug delivery, and
evaluation techniques essential for formulation development and regulatory
compliance. The content is structured to build conceptual clarity while introducing
emerging trends and technologies in the field.