They maybe good. And they maybe effective. But not for IBS
Probiotics are used for a variety of things such as travellers diarrhea, Crohn's, ulcerative colitis and allergies. Any many bacteria found in probiotics are used to produce cheese, yogurt, sourdough, etc and are known to be harmless.
If you wish to improve your IBS symptoms then use a probiotic that is known to help IBS. If you want to take them for any other reasons fine - but don't expect them to help with IBS.
No - Little Minnie is not saying the same thing I am
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS