MacuShield Gold provides a MacuShield formulation with additional vitamins and minerals. Scientific research shows that the three nutrients; meso-zeaxanthin, lutein and zeaxanthin are found at the back of the eye, at the macula, where they form the macular pigment (yellow colour). Meso-zeaxanthin is particularly concentrated at the centre of this pigment. Lutein and zeaxanthin can be found in fruits and vegetables and meso-zeaxanthin is present in some species of fish and seafood. The macular carotenoids in MacuShield are obtained from marigolds (Tagetes Erecta), specifically grown for this purpose. MacuShield Gold combines these three macular carotenoids in a formula containing meso-zeaxanthin, zinc to help maintain normal vision, copper, vitamin C and vitamin E, which contributes to the protection of cells from oxidative stress.