I was told no soda, too. Unless of course it's gone completely flat, but why bother. One girl I know had bypass 10+ years ago and started drinking soda heavily again, then gained back the weight and could eat bigger portions. We all assumed she stretched her pouch (even her surgeon) and just needed a revision, but when they did a scan it turns out she actually dilated her esophagus. It can be surgically corrected, but it's risky and not hopeful that insurance will cover it.