Aubrey Organics Astaxanthin 4mg 60 capsule. Solaray Astaxanthin is a cutting edge antioxidant from the carotenoid family & is 100 times more potent than Vitamin E & 4 times more potent than lutein in antioxidant assays. Astaxanthin is one of a few antioxidants potentially able to cross the retinal & blood brain barriers. Astaxanthin has been studied for its positive effects in the support of healthy eye function, cardiovascular health, improvement of muscle endurance & immune support.