Chapter 1.Computational and informatics methodologies in Drug Discovery, with focus on Natural Products -- Chapter 2.Structural biology an essential tool for Drug discovery and Development -- Chapter 3.Bioactivity guided fractionation and identification of bioactive molecules: A basic method in drug discovery -- Chapter 4.In-vitro methodologies for the safety assessment of drugs -- Chapter 5.In-vivo models for evaluation of Drug efficacy: Demand and Challenges -- Chapter 6.Preclinical In vivo Drug Development Studies: Limitations, Model Organisms and Techniques -- Chapter 7.Peptide Based Therapeutics and Drug Delivery Systems -- Chapter 8.Basics of Clinical Drug Development: Clinical Trial and Drug Development -- Chapter 9.Trailblazing contemporary frameworks for drug repurposing: A saga on drugs' expedition to disinter the veiled destiny -- Chapter 10.Small molecules as promising tool for targeted cancer therapies: an overview of 21st century -- Chapter 11.Nanoparticles for Targeted DrugDelivery Systems with Cancer Therapy in Perspective -- Chapter 12.Biomimetic approach for the controlled drug delivery through 3D bioactive scaffolds: A novel strategy for tissue engineering applications -- Chapter 13.Perspectives on anti-tuberculosis drug discovery -- Chapter 14.Cofactor-Receptor interactions based pharmacophore design for development of novel inhibitors: A case study against Tuberculosis -- Chapter 15.Insilico identification of potential antivirals against SARS-CoV2 main protease and RBD of spike protein - A Drug Repurposing Approach -- Chapter16.Anti-malarial drug discovery and development: from bench to bedside.