Enjoy Oregon"s Wild Harvest Eye Shield. This Formula Supplies Organic Bilberry And A 5:1 Ratio Of Lutein:Zeaxanthin, Which Is The Ratio That Is Found Naturally In Many Fruits And Vegetables. It Is Formulated To Match The Lutein And Zeaxanthin Quantity That Is Being Used In The Current Areds Ii Study, Sponsored By The National Eye Institute. This Large Study Is A Collaboration Of Over 80 Participating Research Centers. Gluten Free. (Note: Description is informational only. Please refer to ingredients label on product prior to use and address any health questions to your Health Professional prior to use.