Drug disposition refers to the processes by which a drug is absorbed, distributed, metabolized, and eliminated from the body. This area of research focuses on understanding how drugs interact with the body, including factors such as absorption rates, bioavailability, metabolism by enzymes in the liver, distribution to tissues, and excretion through various pathways such as urine or feces. It also investigates how factors such as age, gender, genetics, and disease states can influence these processes and affect the effectiveness and safety of a drug. Research in drug disposition is important for optimizing dosing regimens, minimizing drug interactions, and improving the overall pharmacokinetic profile of medications.