“Lactobacillus plantarum?”Here!
Hasn’t appeared in a scanned product yet.
As a supplement
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
A species of lactic-acid-producing bacteria found naturally in fermented foods and used as a probiotic strain in supplements.
Why it’s used
Taken to support digestive comfort and gut microbial balance, with some strains studied for immune-related outcomes.
What the evidence says
Probiotic effects are strain-specific, and evidence varies widely depending on the exact Lactobacillus plantarum strain used. Some individual trials report modest digestive benefits, but results are inconsistent across studies and strains, and unspecified or pooled claims about the species as a whole are not well supported by major reviews.
Where we looked
There was no paper to cite here, so this is the search instead — run it yourself and see what we saw.
- PubMed: 1109 records · searched September 2026
"Lactobacillus plantarum"[Title/Abstract] AND (review[pt] OR "safety assessment"[Title/Abstract] OR "risk assessment"[Title/Abstract] OR toxicology[Title/Abstract] OR toxicity[Title/Abstract] OR characterization[Title/Abstract] OR characterisation[Title/Abstract]) - PubMed: 214 records · searched September 2026
"Lactobacillus plantarum"[Title/Abstract] AND ("dietary supplements"[MeSH] OR supplementation[Title/Abstract] OR supplement[Title/Abstract] OR supplements[Title/Abstract] OR "oral administration"[Title/Abstract]) AND (randomized controlled trial[pt] OR clinical trial[pt] OR meta-analysis[pt] OR systematic review[pt]) AND humans[MeSH] - PubMed: 7942 records · searched September 2026
"Lactobacillus plantarum"[Title/Abstract]
This says what this database holds under these terms. It is not a finding that no research exists.
Context
Probiotic research typically reports dosing in colony-forming units (CFU) rather than mass, and specific strains and doses vary considerably between studies, limiting generalization.
Rumors
Lactobacillus plantarum supports digestive health and immune function.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- mrmed.in — we couldn’t open the site to see who runs it
Lactobacillus plantarum 299v increases iron absorption and improves iron status.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- Metagenics Institute — a publisher: educational resource for practitioners promoting personalized lifestyle medicine
How we know who this is
- “Today, Metagenics Institute is a trusted, peer-to-peer, and evidence-based educational resource for nutrition and personalized lifestyle medicine.” (their page)
- “Vision Metagenics Institute aims to be the most trusted educational resource supporting the movement to make personalized lifestyle medicine the standard of care in the treatment and prevention of disease and promotion of optimal health.” (their page)
- Metagenics Institute — a publisher: educational resource for practitioners promoting personalized lifestyle medicine
Lactobacillus plantarum (strain 299v) relieves irritable bowel syndrome symptoms such as abdominal pain, gas and bloating.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- Metagenics Institute — a publisher: educational resource for practitioners promoting personalized lifestyle medicine
How we know who this is
- “Today, Metagenics Institute is a trusted, peer-to-peer, and evidence-based educational resource for nutrition and personalized lifestyle medicine.” (their page)
- “Vision Metagenics Institute aims to be the most trusted educational resource supporting the movement to make personalized lifestyle medicine the standard of care in the treatment and prevention of disease and promotion of optimal health.” (their page)
- Metagenics Institute — a publisher: educational resource for practitioners promoting personalized lifestyle medicine
Lactobacillus plantarum supplements cause gas and upset stomach.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- WebMD — a publisher: health information publisher; an Internet Brands company
How we know who this is
- “As a leader in digital health publishing for more than 25 years, WebMD strives to maintain the most comprehensive and reliable source of health and medical information on the internet.” (their page)
- “© 2005 - 2026 WebMD LLC, an Internet Brands company.” (their page)
- WebMD — a publisher: health information publisher; an Internet Brands company
Lactobacillus plantarum helps with weight loss.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- WebMD — a publisher: health information publisher; an Internet Brands company
How we know who this is
- “As a leader in digital health publishing for more than 25 years, WebMD strives to maintain the most comprehensive and reliable source of health and medical information on the internet.” (their page)
- “© 2005 - 2026 WebMD LLC, an Internet Brands company.” (their page)
- WebMD — a publisher: health information publisher; an Internet Brands company