Syl, Its incredibly useful to have someone here with your expertise. You are answering questions I have had for ages. I hope you don't mind me asking a couple more? I have had a reply from Ethical nutrients' parent company Metagenics to my question 'why they don't have a product with Bifidobacterium infantis 35624 in?' This excerpt from their reply says they do: "we call it Bifidobacterium lactis (BI-07) For instance, it is in our Ultra Flora Restore product. It has undoubtedly been used for IBS support, however due to our research here at Metagenics and through outside research reviews, it has been determined that the strain that we use in our IBS Support Product (Lactobacillus plantarum) is more specific for IBS". They then quote the research you mentioned: European Journal of Gastroenterology & Hepatology. 13(10):1143-1147, October 2001. Niedzielin, Krzysztof a; Kordecki, Hubert a; Birkenfeld, Boz ena b Do you know if this is the same bifidobacterium? What do you think of the mix in Ultra Flora Restore? I can't find any quantities listed. https://www.metagenics.com.au/shop/index.cfm?fuseaction=item&id=331 I notice it has Lactobacillus acidophilus (NCFM strain) in it and I have no idea if it is useful. They recommend this product for 'detoxing'. I'm going to send them the link to the large study you mentioned on the efficacy of Bifidobacterium infantis 35624 and see what they say.