Not advice as such, but I've had IBS for several years and nothing I've tried seems to alleviate it. Having recently read a book called 'Gut' by Dr Giulia Enders, I have found out that probiotics, whilst all well and good to take, don't always get the nutrition they need. This can apparently be remedied by the taking of prebiotics, found in Jerusalem artichokes, asparagus, onions and garlic, amongst others. However, since you'd have to ingest a vast quantity of such unsocial foods, there are prebiotic supplements you can get. I've just ordered something called 'Bimuno'. I can't speak for its efficacy as I haven't received it yet, but it may be worth looking into to go with the probiotics.