Reddit mentions of Lifeway Organic Probiotic Low Fat Blueberry Kefir, 32 Ounce -- 6 per case.

So I know a lot about this. I've been dealing with acid reflux at night for 10+ years and I have a pretty good handle on it. So first of all, if you can sleep on your back, it's the best position for acid reflux and noticing palpitations. What works for me also is to create a wedge incline with several pillows so that my head is elevated above my stomach. I also drink Calm mixed with Benefiber and that helps to aid with digestion, especially heavy meals (I sometimes drink Kefir as well). What I've noticed over the years is that once my stomach empties, maybe 3-5 hours after eating, I can usually sleep however I want, but sometimes you just eat really late and it can't be helped (maybe eat a lighter meal is this instance). So basically, try not to lay down or at least sit upright until it's time for bed. The last advice is to try and avoid foods that you know bother your stomach, for instance, I know that I can eat Whole Wheat Bread, because I get horrible heartburn and reflux. Good luck.