Previous animal studies have indicated that an extract from leaves of the Ginkgo biloba tree may protect against stroke-related brain injury. However, the mechanism involved has not been fully understood. In a recent NCCAM-funded study, researchers at Johns Hopkins University investigated whether and how the ginkgo extract Egb761 alters outcomes in mice with brain injury from stroke.
Source: http://nccam.nih.gov/research/results/spotlight/110308.htm?nav=rss