Abstract: A system and method of providing personalized medication dosing recommendations are provided. The web-based pharmacogenomics tool includes a system and method for analyzing a patient's genomic information and producing a personalized report containing recommendations to adjust medication selection and dosing for the patient based upon known pharmacogenomic interactions. The tool is adapted to receive a whole genome screening file from a user, use Stargazer to detect diplotypes in specific pharmacogenes: assigning allele functionality, phenotype, drug names, and recommended dosage information based upon the detected diplotypes, and generating a personalized pharmacogenomics report including recommendations of medications to use or avoid and/or suggested dosing adjustments. The tool allows users to submit genomic information in either hg48 or hg19 format.