Temozolomide is a chemotherapy medicine taken by mouth, used to treat certain brain tumours — most often glioblastoma (a fast-growing tumour of the brain's supporting cells) and anaplastic astrocytoma. For newly diagnosed glioblastoma it is usually given alongside radiotherapy first, then on its own in monthly cycles.
It belongs to a group of medicines called alkylating agents. Unlike many chemotherapy drugs it is a capsule rather than an infusion, so most people take it at home. Because it can cross into the brain it is well suited to tumours there.
Your oncology team will calculate your dose from your height and weight (body surface area) and adjust it according to your blood counts. Temozolomide is a prescription-only medicine; a valid prescription must be provided at checkout.