Probiotics hero

Spore-forming probiotics | Probiotics that go the distance

Written by Kate Street, Clinical Nutritionist and Communications and Content Coordinator at Blackmores Institute and Dr Brad Leech, PhD Clinical Nutritionist and Herbalist.

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.

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