Lactobacillus salivarius

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Other names for Lactobacillus salivarius

L. salivarius
Oral and Intestinal Strain
Probiotic L. salivarius UCC118

Synopsis of Lactobacillus salivarius

Lactobacillus salivarius is a lactic acid-producing bacterium that naturally resides in the human mouth, gastrointestinal tract, and vaginal environment. It is particularly notable for its role in oral and dental health, as well as in maintaining a balanced gut microbiome. This species produces lactic acid, hydrogen peroxide, and bacteriocins (natural antimicrobial peptides) that suppress pathogenic bacteria while supporting beneficial microbial populations.

L. salivarius is unique among probiotic species for its dual action in both the digestive and oral cavities. In the gut, it contributes to immune regulation, inflammation control, and digestive comfort. In the mouth, it has been studied for reducing halitosis (bad breath), plaque formation, and periodontal pathogens. Some strains also show potential in managing atopic dermatitis and food sensitivities by supporting barrier function and dampening allergic responses.

Its adaptability, acid resistance, and ability to colonize multiple mucosal surfaces make it a common inclusion in probiotic blends for oral, digestive, and vaginal health. Some commercially used strains—like L. salivarius UCC118—have been studied for their role in modulating immune responses, producing beneficial enzymes, and outcompeting harmful bacteria like Clostridium difficile and Listeria monocytogenes.

Historical Use:
Although L. salivarius was only formally identified in the 20th century, the health-promoting activities associated with it—particularly for oral hygiene and digestive strength—have long been pursued through traditional dietary and medicinal practices. Fermented foods such as yogurt, sour milk, fermented vegetables, and grain-based beverages often contained L. salivarius, though their microbial composition was unknown to their users.

Across various cultures, sour milk and cultured dairy were commonly recommended to improve digestion, freshen breath, and resolve oral discomfort—reflecting an intuitive grasp of the antimicrobial and soothing properties we now associate with microbes like L. salivarius. In ancient Ayurvedic medicine, fermented preparations and herbal mouth rinses were used to maintain oral cleanliness and digestive fire, possibly supporting the environment for beneficial lactobacilli.

While early societies did not have the language of microbiology, their use of live-culture foods and practices aligned closely with the benefits later discovered in strains like L. salivarius. Today, this species serves as a bridge between oral care, digestive support, and immune wellness, validating long-held folk traditions with modern scientific precision.

Lactobacillus salivarius is used for these health conditions

Acid Indigestion (Scientific)
Antibiotics (alternatives to) (Scientific)
Antibiotics (side effects of) (Scientific)
Anxiety (Scientific)
Bladder Infection (Scientific)
Cancer Treatment (reducing side effects) (Scientific)
Canker Sores (Scientific)
Colitis (Scientific)
Constipation (adults) (Scientific)
Diarrhea (Scientific)
Digestion (poor) (Scientific)
Diverticulitis (Scientific)
Gastritis (Scientific)
Gingivitis (Scientific)
Infection (bacterial) (Scientific)
Inflammation (Scientific)
Inflammatory Bowel Disorders (Scientific)
Irritable Bowel Syndrome (Scientific)
Lactose Intolerance (Scientific)
Leaky Gut Syndrome (Scientific)
Oral Surgery (Scientific)
Psoriasis (Scientific)
Small Intestinal Bacterial Overgrowth (Scientific)
Thrush (Scientific)
Ulcers (Scientific)
Urinary Tract Infections (Scientific)
Vaginitis (Scientific)
Wounds and Sores (Scientific)

Lactobacillus salivarius is used to support these body systems

Digestive System (Scientific)
Female Reproductive System (Scientific)
Gastrointestinal Tract (Scientific)
Gums (Scientific)
Immune System (Scientific)
Intestinal System (Scientific)
Large Intestines (Colon) (Scientific)
Mucus Membranes (Scientific)
Peyer’s patches (Scientific)
Sinuses (Scientific)
Small Intestines (Scientific)
Stomach (Scientific)
Teeth (Scientific)
Urinary System (Scientific)
Vagina (Scientific)

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