Astaxanthin, also called the king of carotenoids is the most powerful antioxidant found in nature. It is believed by some marine biologists to be the reason baleen whales live so long as its what gives krill its red color. Its 550 times more effective as an antioxidant than Vit. E and nearly 6000 times more effective than Vit. C in immune support. It is good for eyes, skin, heart and reduces inflammation. This product is a professional grade and formulated at a mg cost less than most value brands. Give PowerNutrients Astaxanthin a try.