Can a chewable postbiotic tablet keep plaque and gum inflammation at bay?
NCT ID NCT07830862
First seen Sep 21, 2026 · Last updated Sep 21, 2026
Summary
Researchers are testing whether a chewable postbiotic tablet, taken twice daily after brushing, affects plaque buildup, gum inflammation, and the mix of bacteria in the mouth. The trial enrolls 56 healthy adults aged 18 to 65 who pause their usual brushing and flossing for a short period. Half receive the postbiotic tablet and half receive a placebo, and neither the participants nor the researchers know who gets which. The main measure is plaque score change from the start to week 4.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- a chewable postbiotic tablet made from heat-treated probiotic bacteria
- What this could lead to
- If it works, a daily chewable tablet could become a simple add-on to brushing that helps keep plaque and gum inflammation in check.
- What could go wrong
- This is a small, short study in healthy adults, so any benefit may not hold up in larger or longer trials. The temporary oral-neglect period also does not match real-life habits, and the tablet may turn out to work no better than placebo.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 56 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Oct 2026
An estimate. Start dates often move.
- Expected to finish
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Jun 2027
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Adults who are between 18 - 65 years of age (inclusive) at the time of signing the informed consent. 2. In otherwise good general health, as deemed by the investigator (based on review of medical history, vital signs, and physical examination performed at screening and/or before the first dose of the study product). 3. Are able to consume the study product completely within the specified timeframe. 4. Have a body mass index (BMI) between 18.5 to 29.9 kg/m\^2 (inclusive). 5. Have ≥24 natural, non-prosthetic teeth present at screening. 6. Have good oral and dental health, as determined by examination at screening. 7. Have maintained consistent dietary habits, including medication and supplement intake, and lifestyle for the last 3 months before screening and agree to maintain them throughout the study. 8. Agrees to abstain from oral sex for at least 24 hours prior to each study visit. 9. Agree to follow the restrictions on concomitant treatments. 10. Agree to follow the restrictions on lifestyle, including oral hygiene. 11. Participants must either be not of childbearing potential or, if of childbearing potential, must agree to comply with the following requirements: * Have a negative pregnancy test at the baseline visit prior to administration of the study product. * Use a highly effective method of contraception. 12. Female-born participants who are using hormonal contraception have been using hormonal contraception for at least 12 months. 13. Female-born participants must agree to abstain from ovum donation, from screening through at least 30 days after the last dose of study product. 14. Willing and able to comply with all study requirements and restrictions, including consumption of study products, biological sample collection procedures, and adherence to the study visit schedule; able to understand and complete questionnaires, provide written informed consent, and voluntarily participate in all study-related procedures. Exclusion Criteria: 1. Individuals who are intending to breastfeed, intending to conceive, or are pregnant as confirmed by a positive pregnancy test during study visits. 2. Have a known sensitivity, intolerability, or allergy to any of the study products or their excipients. 3. Have periodontal probing depths of ≥4 mm at any site at the screening visit. 4. Have treatment-requiring oral diseases, including dental caries, gingivitis, or periodontitis. 5. Have dental prosthetic or orthodontic devices, temporary or permanent, that, in the Investigator's discretion, are likely to interfere with study outcomes (e.g., bridges, retainers, implants). 6. Have a history of use of antibiotics or acid sequestrants (e.g., cholestyramine, colestipol) within 3 months prior to the Screening Visit (Visit 1), or plan to use any of these during the study. 7. Have Type I diabetes or Type II diabetes, high blood pressure (≥140 systolic or ≥90 diastolic mmHg), or uncontrolled thyroid disease ("uncontrolled" defined as being unmedicated, having an unstable use of medication within 3 months prior to screening, or having a stable use of medication for 3 months but still having uncontrolled conditions). 8. Individuals with any abnormality, obstruction, or disorder of the gastrointestinal tract that may preclude swallowing (e.g., dysphagia) or impair gastrointestinal motility, digestion, or absorption (e.g., known intestinal malabsorption, celiac disease, inflammatory bowel disease \[including Crohn's disease or ulcerative colitis\], chronic pancreatitis, or steatorrhea). In addition, any history of gastrointestinal surgery or anatomical abnormality that, in the opinion of the Investigator, may affect the oral absorption of the study product. 9. Have a history of heart/cardiovascular disease, renal disease (dialysis or renal failure), hepatic impairment/disease, immune disorders and/or immunocompromise (i.e., HIV/AIDS). 10. Have a history of cancer (except localized skin cancer without metastases or in situ cervical cancer), unless recovery occurred more than 5 years before the screening visit. 11. Are receiving treatments for or have been hospitalised in the last 12 months for psychiatric disorders (e.g., depression, bipolar disorder, schizophrenia, etc.). 12. Reports a clinically significant illness during the 28 days before the first dose of study product. 13. Major surgery in 3 months prior to screening or planned major surgery during the study. 14. Current users of tobacco products, including smoking or smokeless forms, or former users within 12 months prior to screening. 15. Have a history of alcohol or substance abuse within the 24 months prior to screening, defined as any of the following: * Use of recreational drugs (e.g., cocaine, methamphetamine, marijuana) or nicotine dependence * High-risk alcohol consumption, defined as consuming excessive alcohol based on gender-specific thresholds (four or more drinks on any single day or eight or more drinks per week for women; five or more drinks on any single day or 15 or more drinks per week for men) * Hospitalisation for alcohol or substance abuse in an inpatient or outpatient intervention program * Any use that, in the opinion of the investigator, may be of concern for the study 16. Current enrollment or past participation in another study with any product(s) with at least one active ingredient within 90 days before first dose of study product or longer, if the previous test product is deemed by the investigator to have lasting effects that might influence the eligibility criteria or outcomes of current study. 17. Any other medical condition/situation or use of medications/supplements/therapies that, in the opinion of the investigator, may adversely affect the participant's ability to participate in the study or its measures or pose a significant risk to the participant.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Nutrasource Pharmaceutical and Nutraceutical Services, Inc.
Guelph, Ontario, N1G 0B4, Canada
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