I just ran out of L-glutamine but I've been taking it when my bowels get icky. It seems like in a day or two I'm back to normal. Corn seems to be an issue for me and I went wild on popcorn a few days back. Total binge. So I took a couple of glutamine tablets while I was in the middle of the frenzy and it seemed to keep my reaction limited. I ran out unfortunately before I ran out of popcorn so wasn't able to completely prevent my problem but I think it wasn't as bad as it could have been.