In Europe, it is prescribed to combat the symptoms of Alzheimer’s and Dementia. It improves circulation to every portion of the body, including the brain. Ginkgo also helps to maintain the elasticity and suppleness of the veins and arteries of the circulatory system. The herb also reduces clotting, an important quality for people who have a higher than usual tendency toward clotting. Ginkgo also prevents the interaction of free radicals with neurotransmitters.