Lutein powder by BulkSupplements.com is one of the selections of dietary supplements. Lutein is found in vegetalables like kale, spinach and broccoli. And, Lutein is an antioxidant in that carotenoid family that is an essential nutrient for overall health.* Each serving of this product contains 20mg of Lutein for every 400mg serving and needs an accurate milligram scale to measure. Contents of this product is sold by weight, not volume and settling may occur. And, we also sell it different sizes ranging from 100g to 5kg in resealable bags. Our Lutein powder, or Lutein supplement, does not contain any artificial flavors. And this Lutein 20mg, or Lutein Nutritional Supplement, is dairy free, gluten free and soy free. All products by BulkSupplements.com are manufactured according to cGMP Standards to ensure the highest quality for manufacturing, packaging, labeling, and holding operations. We work with a third-party laboratory that test our products at multiple stages during production, from raw material to finished products, and ensures compliance, standards, and consistency.