In theory, wheatgrass should be safe and not contain gluten as it is not supposed to contain any part of the grain. http://www.wheatgrass.com/faq/factsh...sfactsheet.php

I know I had one person ask about this - the company was very evasive when I called them. I was never satisfied that they actually tested for gluten.

I guess you could call and find out if any testing is done. See if you can get a straight answer.

Barley bran - they have to separate the outer hull from the grain. I would really be concerned about getting part of the grain in such a produce.
Anne