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Dietary Supplement Antioxidant CarotenoidAstaxanthin a member of the carotenoid family is a powerful antioxidant. In vitro research demonstrates that astaxanthin may be up to 4 times stronger than other carotenoids such as lutein cryptoxanthin and beta-carotene and may be up to 85 times stronger than alpha-tocopherol. Astaxanthin possesses both hydrophilic and lipophilic properties and may provide health benefits throughout the body by modulating the activity of free radicals.