Bacillus Clausii is a commonly used Bacillus spp. probiotic. Clinical data support its use for the treatment and prevention of gut barrier impairment. Small trials have investigated use in preterm neonates to prevent infection, treatment of nasal allergies and upper respiratory infections in children, and treatment of acute or chronic diarrhea, small-intestine bacterial overgrowth (SIBO), and adverse effects of Helicobacter pylori therapy in adults.
Probiotics are live microbial feed supplements that beneficially affect the host animal by improving its intestinal microbial balance. The potential benefits that are claimed include improved nutrition and growth and the prevention of various gastrointestinal disorders. Probiotic-containing products are available for human nutrition, as animal feed supplements, and also for aquaculture