oh guess you don't have to do the copy and paste, just click on the highlighted blue link. good luck
I will give you a link to a discussion we had on this a year ago....apparently it is safe to use internally. however I would read all you can about it and if I were you I would give a very small amount first to be sure its tolerated. keep posting and let us know, we rely on everyone's experiences on this site....heres the link. you'll need to copy and paste
http://www.medhelp.org/posts/Cats/Diatomaceous-Earth-and-Revolution/show/2283131