What is the recommended dosage for Lactobacillus plantarum?

General: 10-20 billion CFU/day; Ibs Support: 10 billion CFU/day (299v strain) for 4 weeks minimum

What are the side effects of Lactobacillus plantarum?

Potential side effects include: Mild gas and bloating during initial use, Occasional loose stools, Histamine-related symptoms in sensitive individuals (histamine-producing species), Very rare: bacteremia in immunocompromised individuals.

What is Lactobacillus plantarum and how does it work for gut health?

Lactobacillus plantarum is a versatile probiotic found in fermented foods like sauerkraut, kimchi, and sourdough. It has a remarkable ability to survive stomach acid and bile, and produces antimicrobial substances that inhibit pathogens. Research suggests it may help reduce bloating, improve intestinal barrier function, and modulate immune responses, with particular evidence for IBS symptom relief.

What is the recommended dosage of Lactobacillus plantarum?

Studies have used dosages of 1 billion to 20 billion CFU per day. The strain L. plantarum 299v (LP299V) is the most clinically studied for IBS, typically at 10-20 billion CFU daily. It is available in both refrigerated and shelf-stable formulations, and can be taken with or without food.

Are there side effects or interactions with Lactobacillus plantarum?

L. plantarum is considered safe with a long history of use in traditional fermented foods. Side effects are rare and mild, typically limited to transient bloating. It has been well-tolerated in clinical trials even at high doses. No significant drug interactions have been reported, and it is one of the probiotic species with the broadest safety data.

Lactobacillus plantarum

probiotic_strain

Also known as: L. plantarum, Lactiplantibacillus plantarum, 299v, WCFS1

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About

Lactobacillus plantarum is a versatile probiotic species with strong adhesion to the intestinal mucosa, allowing it to effectively compete with pathogens for binding sites. It produces plantaricin, a natural antimicrobial peptide, and may help modulate NF-kB inflammatory signaling in the gut. The 299v strain has been particularly well-studied for supporting digestive comfort in IBS.

How It Works

Adheres strongly to intestinal mucosa competing with pathogens for binding sites; produces plantaricin antimicrobial peptides with broad-spectrum activity; modulates NF-kB inflammatory signaling reducing pro-inflammatory cytokine production; enhances short-chain fatty acid production in the colon.

Evidence For Conditions

Condition	Grade	Studies	Participants
Irritable Bowel Syndrome (IBS)	B	5	800	View →

Side Effects

Mild gas and bloating during initial use
Occasional loose stools
Histamine-related symptoms in sensitive individuals (histamine-producing species)
Very rare: bacteremia in immunocompromised individuals

Drug & Supplement Interactions

Antibiotics (may reduce probiotic viability; space dosing 2 hours apart)
Immunosuppressants (theoretical risk in immunocompromised patients)
Histamine-intolerance medications (L. plantarum may produce biogenic amines)

Always inform your healthcare provider about all supplements you take.

Related Ingredients

Bacillus coagulans Bifidobacterium bifidum Bifidobacterium breve Bifidobacterium lactis Bifidobacterium longum

Quick Facts

Dosage: General: 10-20 billion CFU/day; Ibs_Support: 10 billion CFU/day (299v strain) for 4 weeks minimum
Forms: capsule powder sachet fermented foods
Natural Sources: Sauerkraut, Kimchi, Pickled vegetables, Sourdough bread, Olives
Upper Limit: Well-tolerated up to 20 billion CFU/day in clinical trials
Best Time: On an empty stomach or before meals

Evidence Summary

Irritable Bowel Syndrome (IBS) B

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.