"Introduction to Biopharmaceutics and Gene Therapy" provides a comprehensive overview of two dynamic fields shaping modern medicine. It begins with an exploration of biopharmaceutics, tracing its historical evolution and highlighting its pivotal role in contemporary healthcare. The fundamentals of gene therapy are then elucidated, covering its various types, historical milestones, and underlying principles. The book delves into the intricate aspects of biopharmaceuticals, including their structure, production methods, and pharmacokinetics/pharmacodynamics. Gene delivery systems are examined, along with their advantages, limitations, and selection criteria. Regulatory and ethical considerations are thoroughly discussed, emphasizing the importance of adherence to guidelines and ethical standards. The book showcases diverse applications of biopharmaceutics and gene therapies across various medical conditions, supported by case studies and examples. Future perspectives and challenges are also addressed, offering insights into emerging trends and strategies for overcoming obstacles.