New evidence
A probiotic lozenge raised the odds of a better ear-drum reading by 87% in children with fluid-filled ears — but the results come from a single, small-population trial.
This is the first solid controlled evidence that Streptococcus salivarius K12 might help children with chronic ear fluid and enlarged adenoids, but one trial — even a double-blind one — is not enough to change clinical practice yet.
Children ages 3–6 who sucked on a daily lozenge of this probiotic for 12 weeks were nearly twice as likely to show improvement on a test that measures how well the eardrum moves (tympanogram), compared to a placebo. The same study also found fewer ear infections and better hearing-test scores, but these are all secondary findings from a single trial that hasn't been replicated.
Where this fits in the evidence
This is among the first studies we've indexed on Streptococcus salivarius K12 for Improved Tympanogram Classification — treat it as an early signal until more research accumulates.
The study
- Randomized Controlled Trial (RCT)
- 2026-02-09
- Frontiers in cellular and infection microbiology
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.