Just thought I would share this in case others suffer the same issue. For quite some time now I've been having full fat probiotic live culture yoghurt with blueberries and a drizzle of honey for breakfast. If course from time to time you get a bit bored with having the same thing day after day, however I think I'll be sticking to the yoghurt from now on. The last 4 times I deviated and had what I would call a solid breakfast, cheese and bacon omelette for instance, I get severe stomach cramps and the need for the loo suddenly becomes urgent. I'm then not able to eat all day and feel really bad.
I normally make my own yoghurt using live culture I get on line but when away in the caravan I try to get the Yeo Valley Greek one with live cultures.
I've read many times on here the sound advice of having yoghurt before taking your tablets and have learnt the hard way of deviating from that!