At present, a multifaceted in drug discovery from medicinal plants continues to unravel novel and important cues against various pharmacological targets including cancer, HIV/AIDS, Alzheimer's, malaria, and inflammation. Several plant-based natural product drugs have found their way into the commercial medicines as dietary supplements or as chemo-preventive agents while others are currently under clinical trials. This book gives an insight into the novel approach of integrated drug discovery, where traditional wisdom and traditional documented use can synergize with drug discovery from plant sources.