The present invention provides, inter alia, methods for treating or ameliorating the effects of a glioma. Methods of this invention include administering to a subject in need thereof an effective amount of a first active agent, such as e.g., an angiotensin receptor blocker, an antifungal agent, a bisphosphonate, an oxytocin inhibitor, an interleukin-1 (IL-1) inhibitor, a cyclooxygenase inhibitor, an α2δ voltage-dependent calcium channel (VDCC) inhibitor, a dihydroorotate dehydrogenase inhibitor, a calcium channel blocker, a renal sodium-chloride symporter inhibitor, an a2 adrenergic agonist, a phenothiazine antipsychotic, a calcineurin inhibitor, a 5-HT agonist, an angiotensin-converting enzyme (ACE) inhibitor, a direct rennin inhibitor, or combinations thereof, and a second active agent, which is a chemotherapeutic agent. Compositions for treating or ameliorating the effects of a glioma are also provided.