<<Disclaimer: Verify this information before applying it to your situation.>> BEANO is also contraindicated for people allergic to penicillin, although they no longer include this on their label. Beans can lose a lot of their potency by boiling them from a cold start, soaking over night, throwing out the water and starting over again the next day. Don't know what you can do about the bean flour! (I've never used it so have no knowledge about it at all). Anne Washburn North Carolina USA