Astaxanthin is a natural concentrate of marine algae Haematococcus pluvialis, a powerful antioxidant found to be effective against oxidative stress. Source Naturals Astaxanthin (1mg) has been discontinued. See below for our newer Astaxanthin choices. Take advantage of FREE air shipping in the USA! ASTAXANTHIN - BioAstin Astaxanthin (4mg) - Now Foods Astaxanthinnow$21.99 60: softgels/4mg.ea ASTAXANTHIN COMPLEX (4mg) - Now Foods ast4Retail Price: $29.00Sale Price: $24.99 60: 4mg.ea.softgels FREE AIR MAIL SHIPPING IN THE UNITED STATES! The statements made here have not been evaluated by the FDA. The foregoing statements are based upon sound and reliable studies, and are meant for informational purposes. Consult with your medical practitioner to determine the underlying cause of your symptoms. Copyright 1997-2009 Life Extension Vitamin Supplies and Life Extension Institute, Inc. All rights reserved.