Now Astaxanthin 4mg Softgels Supports balanced immune system responses and a potent free radical neutralizer. 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. Astaxanthin is derived from Non-GMO Haematococcus pluvialis microalgae and has naturally occurring lutein, canthaxanthin and beta-carotene. Recommended Use: Take 1 softgel daily with a fat-containing meal, or as directed by a healthcare professional. Store in a cool, dry place after opening.