698 Brain Tonic is composed of herbs known to be high in brain-specific nutrient-minerals and oxygen. The major elements are oxygen, iron, phosphorus and magnesium. Gingko leaf may support mental clarity and focus and healthy eyesight. Clary Sage, an uplifting herb, supports alertness. Mineral rich, and nourishing, 698 Brain Tonic helps to restore energy, and clear the mind.