Pharmacogenomics is a field of research that predicts how certain pharmaceuticals and medications will affect you based on your genetic makeup. This can assist physicians in prescribing better, safer medications. Your medication sensitivity and metabolism are influenced by your genes. There are therefore two categories of people for each given drug: those who react to normal treatment at a regular dose and those who don't. It will be necessary to either switch to an other drug or adjust the dosage for individuals who don't react.