Gingko biloba is an ancient tree from China & has been found in fossils dating back 270 million years! The plants main medicinal quality is as a circulatory stimulant & vasodilator, increasing blood flow to the brain & body. These actions have been shown to have great effects on improving memory, vertigo & tinnitus. It is an excellent herb for the colder months too as it increases blood flow to hands & feet (reducing chilblains), & has even been shown to improve arthritic pain. Because it acts on capillaries Gingko can improve sexual function & symptoms of dasthma!