Silk proteins show excellent biocompatibility, controllable biodegradability and non-immunogenicity, and as such are studied extensively worldwide for biomedical applications. In particular, there is increasing interest in their use for drug delivery systems. This focussed book on silk proteins for drug delivery systems, delves into a key emerging area to outline the concepts and define the field. Covering spider silk and silk worm cocoons, the editors elucidate the extraction, structure and properties of silk sericin and silk fibroin. Showing how these proteins are employed in micro and nano drug delivery systems, their use in pre-clinical and clinical trials, and closing with chapter on sustainability- driven innovation in the pharma industry, this book is ideal for graduates and researchers in biomaterials science and pharmaceutical science.