Proculin Plus capsules once a day contain a complex of ingredients necessary to preserve vision and protect the eyes from the harmful effects of free radicals. Proculin Plus is a food supplement that contains a combination of antioxidant vitamins and minerals, lutein, zeaxanthin and omega 3. The xanthophyll pigments lutein and zeaxanthin play an important role in preserving the function of the retina. . Highly concentrated fish oil (enriched with an optimal concentration of DHA) contributes to the preservation of normal vision.