Herb Pharm prepares their Ginkgo extract from the whole green leaves of domestic-grown Certified Organic Ginkgo biloba trees. Mature leaves are plucked from the trees before they yellow, then milled at the last minute before extraction. The herb is extracted in small batches with Certified Organic cane alcohol for potency and to maintain the balance of phytochemicals as they exist in the plant. Herb Pharm assures herb identity via macroscopic and organoleptic analysis, then confirms it through methods such as HPTLC fingerprinting specific to each herb. The formula is easily dispensed, taken in liquid form and added to water or other liquid.Dietary Considerations Gluten Free Suggested Use Shake well before using. Add one full squeeze of the dropper bulb to 2 oz. of water or juice, two to five times per day. Best taken between meals.Amount Per Serving Ginkgo leaf (Ginkgo biloba) extract 660 mg Other Ingredients: Certified organic cane alcohol (57-67%), Distilled water, Vegetable glycerin, Dry herb/menstruum ratio: 1:5Warnings Keep out of the reach of children. Store away from heat and light.