Pharmacogenetics is the study of how genetic variations influence an individual's response to drugs. By understanding how genetic differences can impact the efficacy and safety of medications, researchers can tailor treatments to individual patients based on their genetic makeup. This personalized approach to medicine aims to improve drug therapy outcomes and reduce adverse reactions. Pharmacogenetics has the potential to revolutionize the field of medicine by optimizing drug selection and dosing for each patient, leading to more effective and safer treatments.