The Endurance Products Web site ( is designed for use with the latest versions of Internet Explorer and Netscape Navigator.  If you currently use older versions of these browsers (including Internet Explorer 4.0 or earlier, Netscape Navigator 4.79 or earlier and AOL 5.0 or earlier), you may experience technical difficulties with online ordering. 
To purchase products online at (, you must use a browser that is SSL-compliant and has a "secure mode." (To make sure your browser is secure, look for a closed lock or an unbroken key at the bottom of the Checkout page.)  You must also have JavaScript enabled in your browser's preferences.  We recommend downloading Microsoft IE 5.0 or later, or Netscape Navigator 6 or later to fully experience our site. 
If you continue to access our site with a browser other than those recommended above, key functions such as Checkout (online ordering) and Registration may not work properly.  Below, we've added links to Microsoft Explorer and Netscape Navigator.  You may download the latest versions of either of these browsers from here.
Microsoft Internet Explorer
Netscape Navigator

Endurance Products Company, Vitamins & Food Supplements, Tigard, OR