PURPOSE: This systematic review and meta-analysis evaluates xerostomia occurrence in prostate cancer (PC) patients undergoing [ METHODS: Following the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P) guidelines, comprehensive electronic searches were conducted across PubMed, Scopus, and Web of Science. The study included articles addressing xerostomia as a side effect of [ RESULTS: Twenty studies met inclusion criteria, comprising 2949 [ CONCLUSION: Xerostomia is most pronounced in patients undergoing [