Metamucil and Benefiber
I would not worry about the main ingredients, but rather about additives. I could not find any additives listed for Benefiber. That unfortunately doesn't mean there aren't any. Metamucil, however, lists Sunset Yellow FCF as an ingredient. Whether you think that you want to avoid that or not is up to you. (It's one of those "thousands of people do it" things.) It also contains Citric Acid which doesn't quite meet "non-reactive" descriptions. You might ask one of the two manufacturers or get a full ingredient list and ask for specific reactions. 18.104.22.168 (talk) 00:06, 21 July 2009 (UTC)
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