09 Sep 2026 Blackmores Spore-forming probiotics | Probiotics that go the distance 09 Sep 2026 Share Share on LinkedIn Share on Facebook Share on Twitter Share on Google+ Share on Pinterest Written by Kate Street, Clinical Nutritionist and Communications and Content Coordinator at Blackmores Institute and Dr Brad Leech, PhD Clinical Nutritionist and Herbalist. Articles Key highlights Spore-forming probiotics use a protective endospore structure to survive environmental and gastrointestinal stressors. Their enhanced stability allows many formulations to remain shelf-stable without refrigeration. Once germinated in the small intestine, Bacillus species can interact with the gut microbiota and support digestive function. Specific Bacillus coagulans strains, rather than the species as a whole, have demonstrated benefits for digestive discomfort, bloating, abdominal pain, and other IBS-related symptoms in randomised controlled trials. Spore-forming probiotics are transient residents of the gut rather than permanent colonisers, so any benefit depends on continued daily intake. × To continue reading this article, please Log In or Sign Up for access.