Lactobacillus salivarius UCC118
Lactobacillus salivarius UCC118 is a probiotic strain that produces bacteriocins and short-chain fatty acids to maintain intestinal barrier integrity. It modulates immune responses through Toll-like receptor signaling and enhances gut microbiota diversity.

Origin & History
Lactobacillus salivarius UCC118 is a probiotic strain isolated from the human gut. It is known for its ability to support digestive health and oral hygiene.
Historical & Cultural Context
Probiotics like Lactobacillus salivarius have been part of traditional diets for their benefits in maintaining gut and oral health.
Health Benefits
- Supports gut health by balancing microbiota, enhancing digestion and nutrient absorption. This balance helps reduce bloating and discomfort. - Enhances immune function by stimulating the production of antibodies. This can reduce the frequency of infections by up to 30% according to clinical studies. - Promotes oral health by inhibiting harmful bacteria growth in the mouth. This can lead to fresher breath and reduced risk of cavities. - Reduces inflammation by modulating cytokine production. This may help alleviate symptoms of inflammatory bowel conditions. - Improves skin health by reducing systemic inflammation. This can lead to clearer, more radiant skin. - Aids in weight management by influencing the gut-brain axis. This may help regulate appetite and reduce cravings. - Supports mental health by producing neurotransmitters like serotonin. This can enhance mood and cognitive function.
How It Works
Lactobacillus salivarius UCC118 produces antimicrobial peptides called bacteriocins that inhibit pathogenic bacteria growth in the intestinal tract. The strain synthesizes short-chain fatty acids like butyrate and acetate that strengthen tight junction proteins in the intestinal epithelium. It activates dendritic cells through Toll-like receptor 2 (TLR2) signaling, promoting regulatory T-cell differentiation and balanced Th1/Th2 immune responses.
Scientific Research
Lactobacillus salivarius UCC118 has been studied for its potential to improve gut and oral health, with promising results in clinical trials.
Clinical Summary
Clinical trials involving 200-400 participants demonstrate that L. salivarius UCC118 supplementation reduces infection frequency by up to 30% over 12-week periods. Randomized controlled studies show significant improvements in digestive symptoms including reduced bloating and enhanced nutrient absorption markers. Most research focuses on gut health outcomes, with moderate-quality evidence supporting immune function benefits. Larger long-term studies are needed to confirm optimal dosing protocols and sustained health effects.
Nutritional Profile
- Contains live probiotic cultures. - Supports gut flora balance. - Provides beneficial bacteria for digestive health.
Preparation & Dosage
Typical dosage ranges from 1 to 10 billion CFUs per day. Consult a healthcare provider before use.
Synergy & Pairings
Lactobacillus plantarum, Bifidobacterium lactis, FOS
Safety & Interactions
Lactobacillus salivarius UCC118 is generally well-tolerated with minimal side effects, though some individuals may experience mild gas or bloating during initial supplementation. No significant drug interactions have been reported, but immunocompromised patients should consult healthcare providers before use. The strain appears safe during pregnancy and breastfeeding based on limited available data. Individuals with severe acute pancreatitis or central venous catheter placement should avoid probiotic supplementation.