I have the same problem. I always keep a baggie with chewable digestive enzymes in my purse for emergencies. I rarely eat the white 'poison' but sometimes it's hard to avoid. I will chew a few as I'm eating it and a few after. I think when you don't eat it for a long time your body no longer produces the enzymes to break them down.

May be all in my head, but it does seem to help.

Amy