Hi @Jeano. I suffer from IBS (thankfully not the diarrhoea one) and have been fine with Huel powder as it’s FODMAP free. I can also eat Huel granola, bars and RTD in strict moderation as there is some chicory root powder involved. I am very intolerant of onions and garlic and can suffer for days afterwards if I ingest them. Sadly there are many products out there that contain one or both so I tend to make meals from scratch. Garlic infused olive oil is ok, as is asafoetida and I make my own FODMAP free curry powder to stay on the safe side.
There is a Huel article on the subject: