Pharmacogenomics is the study of how a person's genetic makeup affects their response to medications. By analyzing specific genes, researchers can predict how well a drug will work for an individual and whether they might experience side effects. This personalized approach aims to optimize treatment plans, making medications safer and more effective. The field combines elements of pharmacology, the study of drugs, and genomics, the study of genes and their functions. As pharmacogenomics advances, it holds the potential to revolutionize medicine by tailoring therapies to each patient's unique genetic profile, improving overall health outcomes.