Ursula - re: reflux. I used S26 AR with Riley and it helped alot. With Eli I tried Karicare AR and it didnt seem to agree with him - I think he puked more. I am now using Nan with the Karicare thickener and he is doing really well with it - spews less and gets the burps up easier well. A little pricey, but I'd rather him contented and spend a little more than spewing and grouchy and save $10!!