I’m a new-ish Huel user, I’m at the end of my 4th bag 2nd order and ~5th week. I normally have an extremely fragile gut… I’ve played around with a few things and have gotten to a good place where my system is in sync with the inclusion of Huel my diet. I find Huel is more disruptive when taken by itself, in large qty (more than 3 scoop servings) and without an almost equal qty of water.
It takes some adjustments, but can be done stomach disruption free.