Pharmacology is the branch of medicine that focuses on the study of drugs and their effects on living organisms. It encompasses the understanding of how drugs interact with biological systems, including their therapeutic effects, side effects, and mechanisms of action. This field is essential for developing new medications and improving existing treatments. Pharmacologists investigate various aspects of drugs, such as their chemical properties, biological effects, and the ways they can be used to treat diseases. By studying pharmacokinetics and pharmacodynamics, they help ensure that medications are safe and effective for patients.