Very few probiotics have been clinically tested for their effectiveness for IBS suffers. I have only seen clinical trials for VSL#3 and Align use with IBS. Digestive Advantage claims to have some unpublished research information showing the benefits of the probioticGanedenBC30 (Bacillus coagulans). See this message for more details.
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS