About 2,200 people in England are diagnosed every year with the disease, making it the most common type of primary malignant brain tumour in adults.
The condition can form at any age, but tends to occur more often in older adults.
According to the Mayo Clinic, symptoms of the condition include headache, nausea, vomiting and seizures.
Susan Short, professor of clinical oncology and neuro-oncology at Leeds University, who is the principal investigator of the study, said: “We think that Sativex may kill glioblastoma tumour cells and that it may be particularly effective when given with temozolomide chemotherapy.
