Therapeutic drug discovery is an interdisciplinary approach to the development of new medicines. It combines molecular biology, biochemistry, and pharmacology to identify potential drugs that could be effective in treating a certain disease or condition. The process involves screening compounds for activity against target molecules associated with pathologies, and then testing those compounds in preclinical animal models to evaluate their efficacy and safety. From there, compounds that show promise are further developed into clinical trials with humans to determine if they meet the requirements for approval as a new therapeutic drug. This process takes several years of research, development, and testing before a potential drug can be approved by regulatory authorities.