A: Astaxanthin comes from a unique microalgae (Haematococcus pluvialis) which contains this valuable antioxidant and carotenoid. It’s an amazing substance that is believed to give salmon the stamina to swim upstream to spawn. It is also responsible for their color, and that of flamingos and krill.
A study in the Journal of Medicinal Food, found astaxanthin to be a more powerful antioxidant than any other carotenoid and even vitamin E. The krill eat this microalgae, retaining the natural astaxanthin.