This Extra Strength Astaxanthin 10mg provides a convenient one pill per day dosage format. Astaxanthin is a naturally occurring carotenoid with a unique structure that is known to be a potent free radical scavenger. Because Astaxanthin freely crosses the blood-brain and blood-retina barriers, it can neutralize free radicals in the eye and central nervous system. Scientific studies also demonstrate that Astaxanthin can support the body’s healthy and balanced immune system responses.