Wow, that website kinda punches you in the face with huge fonts.
So it's like an Ensure/Boost type drink? I've been doing Boost with no trouble and it seems to be okay in terms of being low-FODMAP (it's got no gluten, little/no dairy, no fructose). I'll probably stick with Boost just because it's been fine and I can easily find it in stores. I'm hesitant to try something new although I will keep that in mind if for some reason Boost becomes a problem (at the worst part of this flare, I couldn't digest Ensure, so it's possible if I get really bad again that Boost would do the same, although at that point I'd just go back on EEN I think).