Our standardized maqui berry extract, Swanson Ultra MaquiBright, has been clinically studied for its ability to promote tear fluid production safely and naturally. Native to Chile and Argentina, the maqui berry is one of nature's most concentrated sources of antioxidant anthocyanins known as delphinidins, which have specific benefits for eye health. If you're frequently troubles by eye dryness, MaquiBright can protect against the stress that leads to dryness and enhance your eyes' natural tear production for safe, soothing relief.