Glioblastoma is a particularly aggressive brain tumor that at present is incurable. Half of patients die within twelve months of diagnosis. Drugs that are effective against brain tumors are difficult to find, as many cancer drugs often can't cross the blood-brain barrier to reach the brain. Researchers have now found a substance that effectively combats glioblastomas, at least in the laboratory: an antidepressant called vortioxetine. Scientists know that this inexpensive drug, which has already been approved by agencies such as the FDA in the U.S. and Swissmedic, is capable of crossing the blood-brain barrier. With pharmacoscopy, researchers can simultaneously test...