# Bacillus subtilis DE111 **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/bacillus-subtilis-de111 **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-18 **Evidence Score:** 8 / 10 **Category:** Fermented/Probiotic **Also Known As:** Bacillus subtilis strain DE111, DE111 probiotic, Soil-based organism DE111, SBO DE111, Spore-forming probiotic DE111, B. subtilis DE111, Hay bacillus DE111 ## Overview Bacillus subtilis DE111 is a spore-forming probiotic strain that produces [digestive enzyme](/ingredients/condition/gut-health)s and [antimicrobial](/ingredients/condition/immune-support) compounds to support gut health. It works by colonizing the intestinal tract, enhancing nutrient absorption, and modulating immune responses through direct bacterial communication. ## Health Benefits - Supports [digestive health](/ingredients/condition/gut-health) by promoting beneficial gut bacteria, enhancing nutrient absorption. - Enhances [immune function](/ingredients/condition/immune-support) through increased antibody production, reducing infection risk. - Reduces [inflammation](/ingredients/condition/inflammation) by modulating cytokine levels, promoting comfort. - Improves [skin health](/ingredients/condition/skin-health) by reducing systemic inflammation, leading to clearer skin. - Aids in weight management by influencing hormones that regulate appetite. - Boosts mood by producing [neurotransmitter](/ingredients/condition/cognitive)s like [serotonin](/ingredients/condition/mood), enhancing mental well-being. - Supports respiratory health by reducing inflammation, promoting easier breathing. ## Mechanism of Action Bacillus subtilis DE111 produces proteases, amylases, and lipases that enhance protein, carbohydrate, and fat [digestion](/ingredients/condition/gut-health). The strain synthesizes surfactin and other lipopeptides that exhibit antimicrobial properties against pathogenic bacteria. It modulates [immune function](/ingredients/condition/immune-support) by stimulating Toll-like receptors and promoting regulatory T-cell activity in gut-associated lymphoid tissue. ## Clinical Summary Human studies on Bacillus subtilis DE111 include a 2017 randomized controlled trial with 45 participants showing significant improvements in digestive comfort and bowel regularity after 30 days of supplementation. A 2019 study with 60 subjects demonstrated enhanced immune markers including increased secretory IgA levels. Most research involves small sample sizes of 30-60 participants over 4-8 week periods, indicating promising but preliminary evidence for digestive and immune benefits. ## Nutritional Profile - Produces [digestive enzyme](/ingredients/condition/gut-health)s that aid in nutrient breakdown. - Contains spores that ensure survival through the digestive tract. - Supports the production of beneficial short-chain fatty acids. ## Dosage & Preparation Typically taken in doses of 1-5 billion CFUs per day. Available in capsule or powder form. Consult a healthcare provider before use. ## Safety & Drug Interactions Bacillus subtilis DE111 is generally well-tolerated with minimal reported side effects in healthy adults. Mild digestive symptoms like bloating or gas may occur during initial supplementation as gut microbiota adjusts. No significant drug interactions have been documented, though individuals taking immunosuppressive medications should consult healthcare providers. Safety during pregnancy and breastfeeding has not been established through clinical research. ## Scientific Research Several clinical trials have demonstrated its efficacy in supporting [digestive health](/ingredients/condition/gut-health) and [immune function](/ingredients/condition/immune-support). Studies highlight its stability and resilience as a probiotic. ## Historical & Cultural Context Bacillus subtilis has been used in traditional fermented foods for centuries, valued for its digestive benefits and resilience. ## Synergistic Combinations [Prebiotic](/ingredients/condition/gut-health)s, Vitamin C, Zinc ## Frequently Asked Questions ### Does Bacillus subtilis DE111 help with bloating and gas? Bacillus subtilis DE111 may help reduce bloating and gas by producing digestive enzymes — including proteases, amylases, and lipases — that improve the breakdown of proteins, carbohydrates, and fats. Incomplete digestion of these macronutrients is a common driver of intestinal gas and discomfort. By enhancing nutrient absorption and promoting a balanced gut microbiome, DE111 can reduce the fermentation load on the colon. Clinical studies on the strain support its role in improving overall digestive comfort, though individual results may vary depending on diet and gut baseline. ### Can Bacillus subtilis DE111 support immune health? Yes. Bacillus subtilis DE111 supports immune function through multiple mechanisms. It stimulates Toll-like receptors in the gut lining and promotes regulatory T-cell activity within gut-associated lymphoid tissue (GALT), helping to calibrate immune responses. Research indicates the strain can increase antibody production, potentially lowering infection risk. Because approximately 70% of immune tissue resides in the gut, a probiotic that actively engages GALT — as DE111 does — can have meaningful systemic immune benefits beyond just digestive health. ### Can Bacillus subtilis DE111 improve skin health? Bacillus subtilis DE111 may contribute to clearer skin via the gut-skin axis. By modulating cytokine levels and reducing systemic inflammation, it can dampen inflammatory signals that often manifest as acne, eczema, or skin redness. The strain's antimicrobial lipopeptides, including surfactin, also help suppress pathogenic bacteria in the gut that can trigger inflammatory cascades affecting skin. While direct clinical skin trials on DE111 are limited, its anti-inflammatory and microbiome-balancing properties provide a plausible mechanistic basis for skin benefits. ### Does Bacillus subtilis DE111 help with weight management? Bacillus subtilis DE111 may play a supportive role in weight management by influencing hormones that regulate appetite, such as GLP-1 and ghrelin, through its interactions with gut microbiota. A balanced microbiome fostered by DE111 can improve metabolic efficiency and reduce low-grade gut inflammation associated with obesity. While DE111 is not a standalone weight-loss solution, its enzyme production improves nutrient absorption efficiency and its gut-modulating effects may contribute to healthier metabolic outcomes when combined with diet and exercise. ### Can I take Bacillus subtilis DE111 with antibiotics? Taking any probiotic alongside antibiotics requires care. Because Bacillus subtilis DE111 exists as a hardy spore, it exhibits greater resilience than vegetative-cell probiotics, but antibiotics can still reduce its efficacy if taken simultaneously. It is generally recommended to separate probiotic intake from antibiotic doses by at least two hours. Some practitioners suggest continuing DE111 after an antibiotic course to help restore gut microbiome balance. Always consult a healthcare provider before combining DE111 with any antibiotic regimen. ### Are there any side effects of taking Bacillus subtilis DE111? Bacillus subtilis DE111 is generally considered safe for healthy adults, with clinical studies supporting its tolerability. Some individuals may experience mild, transient digestive symptoms — such as increased gas or loose stools — when first starting the probiotic, typically resolving within one to two weeks as the gut microbiome adjusts. Immunocompromised individuals, pregnant or breastfeeding women, and those with serious underlying health conditions should consult a healthcare provider before use, as probiotic safety data in these populations is more limited. ### Does Bacillus subtilis DE111 help with mood and mental health? Bacillus subtilis DE111 may support mood through the gut-brain axis. The strain can influence neurotransmitter production — including serotonin precursors — since roughly 90% of the body's serotonin is synthesized in the gut. By promoting a healthier gut microbiome and reducing gut-derived inflammatory signals that can negatively affect brain function, DE111 may contribute to improved mental well-being. While dedicated mood-focused clinical trials on DE111 specifically are limited, its gut-modulating mechanism aligns with broader research linking microbiome health to emotional regulation. ### Is Bacillus subtilis DE111 safe for children? Bacillus subtilis DE111 has been studied in both adult and pediatric contexts, with available data suggesting a favorable safety profile. Its spore-forming nature makes it stable and predictable in delivery. However, appropriate dosing for children differs from adult recommendations of 1–5 billion CFUs per day, and formulations vary by age group. Parents should consult a pediatrician before introducing DE111 to a child's routine, particularly for infants or children with underlying health conditions or compromised immune systems, to ensure appropriate strain selection and dosage. ### What is the recommended dosage for Bacillus subtilis DE111? Clinical studies typically use doses ranging from 1-5 billion CFU daily. Most commercial supplements provide 1-2 billion CFU per serving, taken with or without food for optimal colonization. ### How long does it take for Bacillus subtilis DE111 to work? Digestive benefits may be noticed within 1-2 weeks of consistent use, while immune system improvements typically require 4-6 weeks. The spore form allows rapid germination and colonization in the intestinal tract. ### Can Bacillus subtilis DE111 survive stomach acid? Yes, the spore form of Bacillus subtilis DE111 is highly resistant to stomach acid, bile salts, and heat. This survival advantage allows effective colonization of the small and large intestines without enteric coating. ### Is Bacillus subtilis DE111 different from other probiotic strains? Unlike vegetative probiotics like Lactobacillus, Bacillus subtilis DE111 forms protective spores that provide superior shelf stability and acid resistance. It also produces digestive enzymes and antimicrobial compounds that many other strains cannot synthesize. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*