A. Astaxanthin, which is the active ingredient in Regenurex, is listed in Canada’s Natural Health Product Monograph for Antioxidants, which means that it has been approved as being safe for consumption by Health Canada. In the US, the Food and Drug Administration (FDA) has granted natural astaxanthin GRAS status based on two brand applications. GRAS stands for Generally Recognized as Safe.
Astaxanthin was approved for sale in the US as a dietary supplement in 1999. Regenurex derives the astaxanthin from a certain type of algae called Haematacoccus pluvialis, which is present in small doses nearly everywhere there is water. If you leave a container outside with water in it, a green ring will eventually appear. This is likely H. pluvialis. This algae is present in small doses on anything that grows outside or in the water. So, humans (and other life forms before us) have been eating algae almost since there was life on earth.