The gut microbiome is emerging as an important determinant of drug metabolism, therapeutic efficacy, toxicity, and inter-individual variability in treatment response. This 3-day hands-on workshop introduces participants to the rapidly evolving field of pharmacomicrobiomics, combining microbiome analysis, pharmacometabolomics, biomarker discovery, and computational drug-response prediction. Participants will explore how microbial communities and their metabolites influence drug biotransformation and PK/PD, and learn how microbiome, metabolomics, and clinical features can be integrated to identify therapeutic-response biomarkers and develop interpretable predictive models. Each day includes a practical Google Colab-based hands-on session, enabling participants to translate research concepts into reproducible computational workflows.