Biomedical Basics

Drug development

  • Created by Henry Stewart Talks
Published on October 30, 2025   5 min

A selection of talks on Pharmaceutical Sciences

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This overview addresses Drug Development, with particular emphasis on the key stages of drug development, starting from initial discovery and preclinical testing through human clinical trials and regulatory approval. We will discuss the roles of regulatory agencies, the challenges and high failure rates inherent in the process, and the importance of designing safe and effective formulations. Finally, we’ll highlight how post-marketing surveillance and ongoing innovation ensure continued patient safety and access to new therapies.. Drug development is a complex process turning scientific discoveries into safe, effective medicines. It begins with discovery, where thousands of compounds are screened using genomics, molecular modeling, and high-throughput methods. Of up to ten thousand initial compounds, only a few proceed to preclinical research, where lab and animal studies assess toxicity, pharmacokinetics, and biological effects. These preclinical models aim to predict human responses, but species differences pose challenges. Good laboratory practice (GLP) ensures reliable data before human testing. After preclinical safety is shown, drug candidates advance to human clinical trials in Phases one through four. In Phase one, small groups of healthy volunteers—or sometimes patients—receive the drug to assess safety, metabolism, pharmacokinetics, maximum tolerated dose, and initial pharmacodynamics. Phase two explores the drug in patients with the target condition, focusing on efficacy,

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