Well as I am writing this I feel stupid, because I have been up all night with heart burn, since I drank my shake before bed. I have been getting the six star protein from walmart for about a year now. I have very bad acid reflux and every time I drink it, it either makes me feel really heavy and bloated, or it gives me heart burn. Keep in mind, if I drink milk it doesn't really bother my stomach. I'm sort of on a budget, so that's why I've been getting this protein. I am looking for a replacement. Has anyone, who suffers from acid reflux like me had any luck with certain brands? I've seen a lot of unflavored whey online, which I would rather drink, because I don't like consuming "artificial flavors" everyday. The whey I've seen online has been decently priced, however the shipping always cost something ridiculous, like $10-$15.