Big effect
A probiotic cut gum pain by nearly half in a 120-person trial — but it was tested only in people with periodontitis, not general gum health
This is the first solid RCT linking Lactobacillus reuteri to a large reduction in gum pain and bone loss, but the effect is specific to periodontitis patients and needs replication before you should act on it.
In a randomized controlled trial of 120 people with periodontitis, those taking Lactobacillus reuteri reported a 48.5% drop in gum pain (from 5.22 to 2.69 on a 10-point scale) and showed less bone loss and inflammation. The study is promising but is among the first on this specific use, so treat it as early evidence, not a recommendation.
Where this fits in the evidence
This is among the first studies we've indexed on Lactobacillus reuteri for Reduced Pain — treat it as an early signal until more research accumulates.
The study
- Randomized Controlled Trial (RCT)
- n = 120
- 2025-09-30
- Oral health & preventive dentistry
- PubMed: 41026095
- DOI: 10.3290/j.ohpd.c_2289
- Full study breakdown →
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.