I understand this is a challenging diagnosis, but there are standard, structured treatments available to help. The primary chemotherapy medication used for Grade 4 Glioblastoma is temozolomide, which is typically taken daily during radiation therapy and then in monthly cycles. Another option is bevacizumab, a targeted therapy that helps restrict the tumor's blood supply and reduce brain swelling. In some cases, chemotherapy wafers containing carmustine may be placed during surgery. His oncology team will carefully tailor these medications to his specific needs to ensure the best possible care and support. Please discuss these options with his oncologist to plan the next steps.