Cellular Protection Potent Free Radical Neutralizer Supports Balanced Immune System Responses Non-GMO A Dietary Supplement General Health Family Owned Since 1968 Quality GMP Assured NOW Astaxanthin is a naturally occurring carotenoid that, due to its unique structure, performs an important role in cellular free radical protection and healthy immune system responses. NOW Astaxanthin is derived from Non-GMO Haematococcus pluvialis microalgae and has naturally occurring lutein, canthaxanthin and beta-carotene.