Pharmacogenomics is the study of a person's genetic structure, or genome, to determine which treatments and drug doses are most likely to work for that individual. This emerging field blends pharmacology, the science of how medications operate, with genomics, the science of the human genome. Precision medicine attempts to personalize health care in every manner possible, with choices and treatments suited to each individual. Precision medicine includes pharmacogenomics. Pharmacogenetics and pharmacogenomics are terms that can be interchanged. Pharmacogenomics, on the other hand, refers to the entire set of genes involved in determining therapeutic efficacy and safety, whereas pharmacogenetics refers to monogenetic variations that modify drug response. In terms of advances in human genomic science, pharmacogenetics is suggested as a key clinically proven application.