This Non-Profit site http://www.naturalproductsinfo.org/ seems to have good information on herbs and supplements. The site has a star rating system for supplements. Three stars indicates that the supplement has "Reliable and relatively consistent scientific data showing a substantial health benefit."
Go to the right of the home page where it says "vitamins A-Z" and then click on "find answers" and then click on "vitamins and herbs A-Z."
I just thought I would post this in case it could help out.
P.S. You can also go to the right of the home page and search for health topics as well, which may be best if you want to find a supplement for a specific purpose.
Edited by John2009, 21 February 2013 - 02:28 AM.
