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Enrolling by invitationPhase 2

Herbal capsule Biocidin REMOVE for SIBO in irritable bowel syndrome

Tests herbal Biocidin REMOVE for SIBO in irritable bowel syndrome.

Key facts

Who runs it
Johns Hopkins University
Where
Baltimore, United StatesSee the site
Trial code
Registry title
Herbal Supplement (Biocidin REMOVE) for Bacterial Overgrowth in Irritable Bowel Syndrome
Status
Enrolling by invitation
Phase
Phase 2
People taking part
40 people, planned
Started
26 Oct 2026
Expected to end
31 Dec 2027
Type of study
Interventional, 2 groupsOne group gets a placebo (a dummy treatment), for comparison.
Treatments tested
  • Biocidin REMOVE
  • Placebo
Record updated
3 November 2026

Who can take part

AI summary

From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.

The trial is looking for adults with irritable bowel syndrome (IBS) who also have too many bacteria in the small intestine (SIBO), shown by a breath test.

Age
18 years or older
Sex
All sexes can join.
Disease stage
IBS by Rome IV criteria. A lactulose breath test must show SIBO: hydrogen rising more than 20 parts per million above baseline in the first 90 minutes, and/or methane of 10 parts per million or greater. A "flat line pattern" (gas levels 3 parts per million or less, no spikes) is also accepted.
Earlier treatment
No antibiotics or probiotics within 30 days. No current narcotic use. No chronic steroids or biologics.
Biomarker or test result
Positive lactulose breath test for SIBO, or a flat line pattern on the test.

Main reasons for not taking part

  • Negative SIBO breath test at the start
  • Restricted diets such as low carbohydrate, gluten-free or low FODMAP
  • Celiac disease, inflammatory bowel disease, chronic liver disease or a weak immune system
  • Pregnant or breastfeeding
  • Insulin-dependent or poorly controlled diabetes (HbA1c greater than 7.0% (53 mmol/mol))

The registry criteria, word for word

Show all 20 criteriaShow less

Who can take part

  • Age 18 years or older
  • Irritable bowel syndrome by Rome IV criteria with a positive lactulose breath test for small intestinal bacterial overgrowth, defined as a rise of more than 20 parts per million of hydrogen above baseline in the first 90 minutes of testing and/or a methane level of 10 parts per million or greater at any point during the test; OR
  • Irritable bowel syndrome by Rome IV criteria with a lactulose breath test showing a "flat line pattern," with exhaled gas levels remaining very low (3 parts per million or less) with no spikes
  • Female participants of childbearing age who are sexually active with male partners must agree to use a highly effective method of contraception, such as abstinence, hormonal contraceptive, intrauterine device, or bilateral tubal occlusion

Who cannot take part

  • Immunocompromised (chronic steroids, biologics), CD4 less than 400, AIDS not on therapy, neutropenia, acute and chronic leukemia, lymphoma
  • Poorly controlled anxiety or depression despite medication
  • Concurrent narcotic use
  • Confirmed celiac disease
  • Portal hypertension
  • Diagnosis of inflammatory bowel disease
  • COVID-19 positive
  • Connective tissue disease such as lupus or scleroderma
  • Chronic liver disease, defined as: ICD-10 known diagnoses of chronic liver disease; OR known or suspected liver cirrhosis, portal hypertension, or chronic hepatitis; OR serum AST and ALT elevation greater than 2 times the upper limit of normal with decreased serum albumin less than 4.0 g/dL within the last 6 months
  • Insulin dependent or poorly controlled diabetes mellitus (HbA1c greater than 7.0%)
  • Negative SIBO breath testing at baseline
  • Restricted diets (low carbohydrate, Atkins, gluten-free, low FODMAP, or others)
  • Pregnant or breastfeeding
  • Untreated significant anxiety or depression
  • Unable to provide informed consent
  • Antibiotic or probiotic use within 30 days

Where in United States

  • Johns Hopkins HospitalBaltimore, United StatesEnrolling by invitation

About the trial

What the trial wants to find out

The goal of this clinical trial is to learn if an herbal supplement called Biocidin REMOVE can clear small intestinal bacterial overgrowth (SIBO) in adults with irritable bowel syndrome (IBS). SIBO means there are too many bacteria in the small intestine. It can make IBS symptoms worse.

Read full original descriptionShow less

This is a small first study, called a pilot study. Its results will help researchers plan larger studies.

The main questions it aims to answer are:

Does Biocidin REMOVE clear SIBO? Does it lower IBS symptoms and improve quality of life? Does it change the mix of bacteria in the gut? Researchers will compare Biocidin REMOVE to a placebo. A placebo is a look-alike capsule that contains no active ingredients. Neither the participants nor the research team will know who gets which one. About 40 adults age 18 and older will take part.

Participants will:

Take capsules by mouth twice a day for about 5 weeks. Participants will start with a low dose and build up to 2 capsules twice a day.

Take a breath test at the start and at the end of treatment. This test checks for SIBO.

Collect a stool sample at home at the start and at the end of treatment. Answer questions about symptoms and quality of life. Report what was eaten during the study. Come back for one check-in about 4 weeks after treatment ends.

The 2 groups in the trial

  • Biocidin REMOVETreatment being tested

    Participants receive Biocidin REMOVE capsules, a herbal preparation supplied as a 665 mg capsule containing 325 mg of the active proprietary blend. Dosing begins with a 9-day titration, increasing by one capsule every three days: one capsule once daily on Days -9 to -7, one capsule twice daily on Days -6 to -4, and two capsules in the morning with one in the evening on Days -3 to -1. Participants reach the target dose of two capsules twice daily on Day 1 and continue at that dose through Day 28. Capsules are identical in appearance to placebo.

  • PlaceboPlacebo, for comparison

    Participants receive matching placebo capsules, identical in appearance to Biocidin REMOVE and containing no active ingredients. Placebo follows the same 9-day titration and dosing schedule as the experimental arm: one capsule once daily on Days -9 to -7, one capsule twice daily on Days -6 to -4, two capsules in the morning with one in the evening on Days -3 to -1, then two capsules twice daily on Days 1 through 28.

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

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Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
A Pilot Study of the Role of an Antimicrobial Herbal Formulation (Biocidin REMOVE) for the Management of Small Intestinal Bacterial Overgrowth (SIBO) in Patients With Irritable Bowel Syndrome (IBS)
Plain-language title
Herbal capsule Biocidin REMOVE for SIBO in irritable bowel syndromeGenerated from the registry record. The registry title is the official one.
AI summary
From the trial's eligibility criteria. Read by machine on 14 November 2026.
Record updated
3 November 2026