Pharmacogenomics is a branch of genetics which studies the role of an individual’s genome in determining drug response. As the name suggests, it is a combination of pharmacology and genomics. The purpose of pharmacogenomics is to develop safe and effective medications tailored to an individual’s genetic make-up. Research is being conducted to find out more about how variations in genes affect the body’s response to a particular drug. Once these findings can be determined, the overall adverse drug reactions and its related complications can be reduced.