I switched to Huel mainly because of IBS type problems (I’ve never been diagnosed but the symptoms seem similar). It was originally intended as an experiment. Use Huel (and/or one of its alternatives) as a baseline and add in types off food to see what was setting me off.
As it turned out, if I have Huel for 2 of my three meals a day, very little sets me off. So I’ve stuck with it since.