My irritable bowel symptoms are normally well controlled by a low salicylate diet but five months ago I had travellers diarrhoea that I just couldn't seem to get over. During a course of VSL#3 (which is very expensive!) my symptoms worsened so much that I ended up gluten free as well as strictly failsafe. A pharmacist recommended Naturopathica GastroHealth4 because "we stock this for a regular customer who says 'this brand really works'". After two courses of GH4 I have improved so much I am now able to tolerate gluten again including wholemeal bread and pasta that previously would have been unthinkable for me, can tolerate some moderate salicylates and I no longer need to take probiotics. - Sue by email.
See more including 3 scientific references at http://fedup.com.au/factsheets/additive-and-natural-chemical-factsheets/probiotics