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Well, I can tell you about my personal experience with wheat and barley
grasses . . .

I'm allergic to wheat and gluten (not officially CD) and had a violent
reaction after unknowingly taking a supplement with wheat and barley
grass.  I couldn't figure out what I'd eaten, because I had not ingested
anything out of the ordinary -- except the supplement.  Went and checked
the bottle and saw the ingredients.  I can't speak to the gluten
problem, but take it from someone with wheat and gluten allergies --
that was not a fun experience.

Audrey Ward
Boulder, Colorado