HERB PHARM SAGE - NERVOUS SYSTEM is supplement that helps you to focus and concentrate. It is made with Ginkgo leaf extracted from Organic whole green leaves of Ginkgo biloba trees. Mature leaves are plucked from the trees before they yellow, then milled at the last minute before extraction. It also features Gotu Kola extract, prepared from the aerial parts of Certified Organic Centella asiatica plants. The herb is hand-harvested at its optimal potency, carefully shade-dried, then thoroughly extracted. To Use: Shake bottle well, open and squeeze the dropper bulb once. Release the recommended serving (as per each label) into at least 2 oz. of water or juice. Drink. For the best results, repeat this process as directed by the Suggested Use instruction on the product label.