Testing Ramipril to Prevent Memory Loss in People With Glioblastoma

This is a pilot study of an oral drug Ramipril to prevent cognitive decline in glioblastoma patients receiving partial brain radiation and concurrent and adjuvant temozolomide . Ramipril will be titrated to the highest tolerable dose during chemoradiation (2.5-5 mg). Once this dose is determined, the patient will continue at this dose for 4 months after the completion of chemoradiation. Patients will be followed until 5 months post chemoradiation for compliance, toxicity, cognitive decline and participant reported outcomes (PRO).