I am not too sure where to get astaxanthin but I am now using Carophyll Red which was recommended by Andrew Soh some time back. I managed to find a company that supplied Carophyll Red for the poultry industry and managed to buy what he had left. The only problem is that unless he has some leftovers his supplies only come in 20 Kg bags. If you are interested you can try contacting them to see if they have any leftover stock. I can't remember the website but you can do a google search for Rabar or Carophyll Red. Hope this helps.