xylitol, protein isolate versesnon denatured whey protein

I learned that no -itols was true for RNY's, but not for DSer's

I never had the issue anyway, since I use sucralose (Splenda), or saccharin.

I use whey protein isolate, because most of the lactose is processed out of it, and I am lactose intolerant.  I was before I went in. 

I learned during pre-op classes that many DSers are lactose intolerant immediately post op, but if you weren't going in, it will go away.  My program instructor said that if you are LI going in, you will be more so coming out, but for me, after 4 years, LI is lest of an issue that it was early out. .  I do have a limit, but I can use dairy products with little consequence.  It's the sugar in ice cream that gets me going, so I get the ice cream sweetened with Splenda.