The 21st Century Gingko Biloba Extract provides 60 servings at a very attractive price per serving ($0.11), contributing to its high review count and popularity. While it is marketed as an 'extract,' which implies concentration, it critically omits the industry-standard details of being standardized to a specific percentage of Ginkgo flavone glycosides (e.g., 24-27%) and terpene lactones (e.g., 6-12%). Without this standardization, nutritionists advise caution, as the actual amount of the beneficial compounds can vary from batch to batch, leading to inconsistent or suboptimal results for brain health, cognitive function, and cardiovascular support. Despite its value, the lack of crucial information means it does not represent a top-tier Ginkgo product.