Pharmacogenomics: Precision Pharmacy in 503A Compounding.

The first recorded mention of a pharmacogenomic response may be that of Pythagoras in 510 BC, when he noted that hemolytic anemia developed in some but not all people who ingested fava beans. The application of such accounts to pharmacotherapy was inevitable, and customized medications have been compounded since antiquity to treat the needs of individual patients. Today, advances in pharmacogenomic testing yield results that enable more effective targeted therapies sooner in the course of treatment, prevent drug-related adverse effects, save cost, and ensure a better therapeutic outcome.