Ginkgo biloba improves blood circulation, which might help the brain, eyes, ears, and legs function better. It is often taken for memory loss or disorders like Alzheimer’s disease. Ginkgo is also used for conditions such as difficulty concentrating, mood disturbances, hearing disorders, headaches, ringing in the ears, vertigo, and dizziness. It is also used for thinking disorders related to Lyme disease, chemotherapy, and depression.