Effectiveness of Aquamin® in Mitigating Halitosis

January 15, 2026 updated by: Muhammad N Aslam, MD, University of Michigan

Evaluation of Halitosis Using a Multi-Mineral Approach (Aquamin®)

The purpose of this study is to assess whether Aquamin®, a multi-mineral natural product from red marine algae, can help reduce halitosis when taken for 90 days.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Detailed Description

This is a sub-study to the ongoing clinical trial entitled: Aquamin®, a multi-mineral natural product from red marine algae, as an adjuvant intervention for mild ulcerative colitis and ulcerative colitis in remission (HUM00156676) NCT# NCT03869905.

However, the Food and Drug Administration (FDA) indicated that no Investigational New Drug Application (IND) was required.

Study Type

Interventional

Enrollment (Estimated)

15

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Michigan
      • Ann Arbor, Michigan, United States, 48109
        • University of Michigan School of Dentistry

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 99 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Must be able to give written informed consent
  • Willing to follow study procedures of no eating, drinking, toothbrushing, smoking or using mouth rinse 60 minutes before study visits
  • Willing to not scrape their tongue with a toothbrush, oral hygiene aid, or other utensil during the study participation
  • Periodontally stable
  • Self-reported halitosis
  • A negative pregnancy test for pre-menopausal women with intact female reproductive organs, and subject must agree to use appropriate birth control over the study period.

Exclusion Criteria:

  • Pregnant or lactating women
  • Participating in any other interventional trials using an investigational drug
  • Diagnosed with any stomach or intestinal bleeding disorders (gastrointestinal bleeding from gastric or duodenal ulcers, or gastrin secreting tumors) or active gastric / duodenal ulcers - peptic ulcer disease (in last 3 months) or with severe symptoms of ulcerative colitis or Crohn's disease
  • Any gastrointestinal or colonic malignancy- Kidney disease, including kidney "stones" or hypercalcemia
  • Coagulopathy/hereditary hemorrhagic disorders/or receiving therapeutic doses of Coumadin or heparin
  • Presence of one or more cavitated carious lesions, untreated dental abscesses (endodontic or periodontal), untreated periodontitis (gum disease), or oral pathologies that may contribute to oral malodor (e.g., candidiasis, erosive gingival conditions)
  • Taking any of the following within 30 days (will be eligible after completing 30 days of wash out period):

Calcium; Vitamin D, including multivitamins that have low amounts of calcium/Vitamin D supplements; Oral steroids; Non-steroidal anti-inflammatory medications (NSAIDS); Antibiotics.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Aquamin®
Drug: Aquamin
Participants will take a 90-day supply of Aquamin®, 4 capsules per day; 2 to be taken in the morning and 2 in the evening (containing approximately 800 mg calcium/day).
Other Names:
  • Nutritional

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Halitosis Associated Life-quality Test (HALT) questionnaire (modified)
Time Frame: 90 days (post-intervention)
Following the intervention, participants will answer questions regarding if their bad breath has improved over the course of the study compared to the starting point. The scores will be from 0 (no issue) - 5 (worst possible issue) for each question.
90 days (post-intervention)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Michigan

Investigators

  • Study Director: Janet Kinney, University of Michigan
  • Principal Investigator: Muhammad N Aslam, University of Michigan

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 15, 2022

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

December 1, 2026

Study Registration Dates

First Submitted

September 16, 2021

First Submitted That Met QC Criteria

September 16, 2021

First Posted (Actual)

September 28, 2021

Study Record Updates

Last Update Posted (Actual)

January 20, 2026

Last Update Submitted That Met QC Criteria

January 15, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • HUM00156676 Halitosis substudy

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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