Pharmaceutical enzymes are biologically active proteins that drive groundbreaking advancements in medicine. They serve as catalysts for targeted therapies, facilitating reactions crucial for treating conditions like cancer, metabolic disorders, and inflammatory diseases. Common examples include proteases for wound healing, asparaginase for leukemia treatment, and lipases for managing pancreatic insufficiency. These enzymes are highly specific, reducing side effects compared to traditional drugs. Innovations in recombinant DNA technology have enabled large-scale production and enhanced enzyme stability, paving the way for cost-effective treatments. As research evolves, pharmaceutical enzymes promise to revolutionize precision medicine and improve patient outcomes worldwide.