Gingko Biloba is one of the oldest Chinese herbs, and people used the leaves to make extract for treating certain illnesses. It treats many conditions caused by lack of blood flow in the brain, including tinnitus and memory loss. The herb can also aid in mood swings and depression. Gingko can help alleviate pain caused from poor circulation. It is also used in cosmetics. Before taking gingko, consult a doctor to avoid any unsafe interactions with medications.