Probiotic & Fiber · Fermented/Probiotic

Lactobacillus plantarum 299v

Provisional Strong Scoreprobiotic

Hermetica Superfood Encyclopedia

Published March 18, 2026Last updated March 18, 2026Methodology · Editorial policy · Report an error

Evidence review status: unreviewed

Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.

Review flags: AWAITING_SEMANTIC_VALIDATION

Provisional Summary

Lactobacillus plantarum 299v is a clinically-studied probiotic strain that adheres to intestinal mucosa via mannose-specific adhesins. It modulates gut microbiota composition and enhances intestinal barrier function through the production of plantaricin and other bacteriocins.

—

Screened PMID Records

Reported Benefits

Pending

Synergy Review

At a Glance

CategoryProbiotic & Fiber

GroupFermented/Probiotic

Public Score StatusProvisional Strong

Primary KeywordLactobacillus plantarum 299v benefits

Lactobacillus plantarum 299v — botanical close-up

Reported Benefits (Provisional)

Supports digestive health by balancing the gut microbiota and suppressing harmful bacteria. - Enhances immune function by modulating cytokine production and increasing resistance to infections. - Alleviates symptoms of irritable bowel syndrome (IBS), including bloating and abdominal pain, by improving gut barrier integrity. - Reduces inflammation in the gut, supporting those with inflammatory bowel conditions. - Improves absorption of nutrients by maintaining a healthy intestinal lining. - Produces beneficial metabolites like short-chain fatty acids, which nourish colon cells. - May reduce the duration and severity of diarrhea, including that caused by antibiotics. - Promotes regular bowel movements and overall digestive comfort.

Origin & History

Natural habitat

Lactobacillus plantarum 299v is a probiotic strain isolated from human intestinal microbiota. It is produced through fermentation and is used in dietary supplements and functional foods.

“Discovered in the 1980s, Lactobacillus plantarum 299v is a well-researched probiotic strain used in supplements and functional foods worldwide.”Traditional Medicine

Research Narrative (Provisional)

Lactobacillus plantarum 299v has been studied in multiple RCTs, showing efficacy in supporting digestive and immune health. Meta-analyses confirm its benefits in various health conditions.

Preparation & Dosage

Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.

Nutritional Profile

- Contains live probiotic cultures. - Produces lactic acid, supporting gut health. - Rich in bioactive compounds that modulate the immune system.

Reported Mechanism (Provisional)

Mechanism of Action

L. plantarum 299v adheres to intestinal epithelial cells through mannose-specific lectins and produces plantaricin bacteriocins that inhibit pathogenic bacteria. The strain stimulates tight junction proteins like claudin-1 and occludin to strengthen intestinal barrier function. It modulates immune responses by increasing IL-10 production while reducing pro-inflammatory TNF-α and IL-6 cytokines.

Clinical Narrative (Provisional)

Multiple randomized controlled trials involving over 500 participants have demonstrated L. plantarum 299v's efficacy for IBS symptoms. A 4-week study of 214 IBS patients showed significant reduction in abdominal pain scores (p<0.001) and bloating compared to placebo. Additional studies indicate improved iron absorption in iron-deficient women and reduced antibiotic-associated diarrhea incidence. The evidence base is considered moderate to strong for digestive health applications.

Also Known As

Lactobacillus plantarum strain 299vLP299VL. plantarum 299vDSM 9843Lp299vProViva strainHuman-derived plantarum strain

Browse All Ingredients More Fermented/Probiotic About the Encyclopedia

These statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.

From the Hermetica Research Desk

Research updates — and 25% off your first order

Join our list for source-aware wellness education, review-state updates, and product news — and unlock 25% off your first Hermetica order. Educational content is not medical advice. No spam, unsubscribe anytime.

Educational content only — not medical advice.