The SARS-CoV-2 virus is the cause of the ongoing COVID-19 pandemic, which necessitates the rapid development of antiviral therapies. There is a dearth of knowledge regarding viral behavior and host response following SARS-CoV-2 infection due to its recent development. Therefore, an association between a drug and a genetic variation that may have an impact on a patient's response to drug therapy, known as a drug-gene interaction (DGI) expression is an important aspect covered in this module. The ultimate objective of drug gene interaction therapy is for a given patient to experience a minimal amount or absence of adverse medication reactions while achieving an acceptable therapeutic result, such as the eradication of infection. The drug_gene_expression module searches the drug-gene interaction dataset (DGIdb) using the drug's name as the input query to identify the gene(s) that interact with the drug. The database of DEGs taken from MSigDB is examined for the expression of these genes, whether upregulated or downregulated. The query drug is given a score of 0 if the gene is not listed in the DEG database, meaning it has no effect on any COVID-19-related genes. A value of 1 is given to drugs that interact with COVID-19-related genes.