Bacillus clausii
Synopsis of bacillus clausii
Bacillus clausii is a spore-forming, gram-positive, rod-shaped probiotic bacterium known for its exceptional stability, resilience, and gastrointestinal benefits. Unlike many traditional probiotics that are sensitive to stomach acid, heat, and bile, B. clausii survives harsh conditions during digestion due to its endospore-forming capability, making it ideal for oral supplementation.
This bacterium is used to support gut health, immune modulation, and restoration of intestinal flora, particularly in individuals experiencing dysbiosis due to antibiotic use, infections, or digestive disorders. It is classified as a commensal organism and is naturally present in the human gut in small quantities.
Key benefits of Bacillus clausii include:
- Restoration of healthy gut microbiota, especially after antibiotic therapy
- Reduction of diarrhea, including antibiotic-associated, infectious, and chronic forms
- Immune modulation, including promotion of anti-inflammatory cytokines
- Inhibition of pathogenic bacteria such as Clostridium difficile and Salmonella
- Support in managing respiratory and allergic conditions, possibly due to its effects on immune balance
It is commonly available in oral suspension, capsule, or sachet form, and is used both in clinical settings and over-the-counter supplements, especially in Europe, Asia, and Latin America.
Historical Use:
Bacillus clausii has been studied and utilized primarily in the 20th and 21st centuries, particularly in pharmaceutical microbiology and probiotic research. While it does not appear in traditional herbal or folk medicine, it has a decades-long history in clinical medicine, especially in Italy and other parts of Europe, where preparations like Enterogermina have been used since the 1960s to treat diarrhea and intestinal flora imbalance.
Its use is supported by modern clinical studies, and it is often recommended by physicians alongside or after antibiotic treatments to prevent or reduce gastrointestinal side effects and promote microbiome recovery.
Although not part of ancient medical systems, Bacillus clausii serves a role similar to traditional fermented foods and digestive tonics, acting as a biological ally for gastrointestinal and immune balance in contemporary integrative health care. Its resilience, safety profile, and multifunctional benefits make it a valuable next-generation probiotic, particularly for gut restoration and immune modulation.
Bacillus clausii is used for these health conditions
Antibiotics (alternatives to) (Scientific)
Antibiotics (side effects of) (Scientific)
Colitis (Scientific)
Diarrhea (Scientific)
Enteritis (Scientific)
Gastritis (Scientific)
Infection (Scientific)
Infection (bacterial) (Scientific)
Inflammatory Bowel Disorders (Scientific)
Irritable Bowel Syndrome (Scientific)
bacillus clausii is used to support these body systems
Digestive System (Scientific)
Gastrointestinal Tract (Scientific)
Immune System (Scientific)
Intestinal System (Scientific)
Large Intestines (Colon) (Scientific)
Small Intestines (Scientific)
Products containing bacillus clausii
Douglas Laboratories
Multi-Probiotic Spore
Designs For Health
ProbioSpore™
Additional Help
Talk with Dr. Shannyn
Get to the root of what’s really going on.
Symptoms like fatigue, bloating, skin issues, or mood changes often point to deeper imbalances. Our at-home lab tests make it easy to investigate hormone health, gut function, food sensitivities, and more—no clinic visit required.
Schedule a Free Consult →
Personalized support. No pressure. No cost.
At-Home Lab Testing
Want to know if your body really needs this ingredient?
Explore our at-home lab tests—from hormone and gut panels to toxin screenings. These simple kits give you data to back your decisions, and pair perfectly with natural ingredient guidance.
Explore Lab Testing →
Results interpreted with expert support. No clinic visit required.
