Astaxanthin is one of the most powerful and important free-radical scavengers yet discovered. Astaxanthin is a member of the carotenoid family of compounds, and is a fat soluble nutrient that can function as a free-radical scavenger. country of origin : united states is dairy free : yes is gluten free : yes is wheat free : yes size : 30 vcap pack of : 1 selling unit : each