Gluten and wheat free

A friend of mine wants to go on this diet but when she tried the oat bran she got a reaction on day 3 (swelling throat and sore eyes). She's gluten and wheat intolerant, and clearly there is some gluten in the oatbran. She's very disappointed as she feels it will be hard to stick to the diet longer term without some sort of equivalent. Does anyone have any ideas?
I've been looking hard at Buckwheat. It doesn't have the same properties as oats, in the gelatinous and water attracting department, but I think it would be a good substitute from Conso on. I've posted a link to the recipe I've found but not tried it yet. If anyone does, please let me know.
Buckwheat is high in several minerals, including Rutin, which is good for joint inflammation.
Sunflower Buckwheat Bread Recipe by Natural Foods | ifood.tv

Rice bran might be another option:
Rice Bran - Bob's Red Mill

My vote is for the rice bran - oat bran is supposed to be safe, but its also commonly contaminated by gluten during manufacture and even in the growing process (from what I read if the oats are grown near wheat and barley they can cause a reaction in some people who are extremely sensitive). There are supposed oat bran sources that are certified as free of gluten contamination - but if she has already had a reaction I wouldn't risk trying out different manufacturers.

That sounds promising, thanks. I thought it was likely to be contamination of the oats. Yes, rice might work though rice seems to be DD's least favourite starch. I was wondering about Soy? Anyway it will have to wait as I'm off to France today. chat again when I'm back.