Dietary Supplement. Natural Mental Sharpness*. Helps Your Brain Function At Its Best*. Clinically Proven Safe & Effective. Contains No Sugar, Caffeine or Artificial Stimulants. What is Ginkoba®? Ginkoba is a natural daily supplement that is clinically proven to improve mental sharpness by safely increasing the flow of oxygen-rich blood to the brain.*. Why take Ginkoba? We strive to take care of our bodies. But it s not often that we think to take care of our brains. Ginkoba helps your brain function at i.