Carotenoids are plant pigments that give fruit, vegetables, and algae their characteristic yellow, orange, and red colours. They have important roles as antioxidants that protect the body from free radical damage, as well as specialized activities such as helping to maintain eyesight, immune function, prostate health, and vitamin A levels. Natural Factors offers a variety of single nutrient and combination supplements featuring the carotenoids beta-carotene, lutein, zeaxanthin, astaxanthin, and lycopene.