The book "Development of Herbal Drug Delivery System for Anticancer Therapy" offers a comprehensive examination of the development of herbal drug systems for cancer treatment. It highlights the advantages of herbal formulations, particularly regarding the enhancement of drug solubility, increased bioavailability, and optimized release properties. The author, Sundeep Chaurasia, analyzes the use of Piper betle leaves, which are valued in traditional Chinese and Indian medicine, and explores their potential role as chemopreventive agents due to their antioxidant properties. By applying a 3-stage full factorial design, the process conditions for formulating microspherical carrier systems are optimized to achieve higher drug loading. The results of cytotoxic studies on various microspheres are also presented in detail, underscoring the relevance of this research for the development of new therapies.