I find it can really dehydrate me, and then make the pouch output too acidic. I am about 13 years out and if I have a little it's ok (like 1 glass of something), but any more than that and the balance is thrown off and I get strange feelings throughout my body. I don't think it's a good idea actually. But sometimes you just want to because you haven't been able to, or because others are. (Good idea right? *grin!*)