Knock wood and anything else I can find, but I haven't had tummy problems in a race for quite a while. But just in case, I put a couple of the Gas-X strips either in my shirt or Bento Box. They are as thin as a slip of paper, so carrying them is a non-issue. You just never know. :)
Oh yeah, unpeel them just a bit so you don't have to fuss trying to open it on the bike or on the run. If you're reaching for it, you're in enough distress as it is. :)
What has saved me from stomach and cramping troubles--and I credit this product 100%--is Succeed S!caps. Stomach and cramping issues disappeared when I began using this product. I used to have terrible problems in both areas, so I looked to the ultra-running community to see what they used to stave off the nausea and cramping beasts. Do yourself a favor, and take the time to read these articles by S!caps owner/developer Karl King, as well as the FAQ on his web site. Karl's description of their efficacy reflects my experience exactly. It's incredible how well this product works for me. Do just as he says, and you won't need the Gas-X! (Old habits and fears die hard so that's why I still carry it!)