Could probiotics tame Chemo's worst symptoms?
NCT ID NCT06772090
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tests whether taking probiotic supplements can help reduce common chemotherapy side effects like nausea, diarrhea, and loss of appetite in people with stage III colon cancer. Forty adults will be randomly assigned to receive either probiotics or a placebo during their chemo treatment. The main goal is to see if a larger, more definitive trial is even possible, so results will focus on how many people complete the study and how many side effects occur.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Probiotic supplement (Lactobacillus and Bifidobacterium)
- What this could lead to
- If it works, this could point toward a simple way to reduce common chemo side effects like nausea and diarrhea for people with colon cancer.
- What could go wrong
- This is a very small, early feasibility trial with only 40 people. It is designed to test whether a larger study is possible, not to prove the probiotics work. Results may not apply to other cancers or treatments.
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 40 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Dec 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
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 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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: * Adults ≥18 years old * Diagnosis of stage III colon cancer * Undergoing chemotherapeutic treatment within the MHFV or MVAHC medical systems. Exclusion Criteria: * Allergy or sensitivity to probiotic supplementation * Diagnosis/history of: Non-colon GI cancer or chronic GI-related disease or disorders such as gastric ulcer, irritable bowel syndrome, inflammatory bowel disease, or intestinal malabsorption syndrome Cognitive impairment, such as dementia, or developmental disorder that would affect ability to give consent or comply with study procedures * Current treatment of cancer other than non-melanoma skin cancer, including metastases and recurrences * Current participation in another interventional study of medication(s) * Major changes in eating habits within the past 3 months, such as stopping or starting a restricted diet * BMI ≥40 kg/m2 or ≤17 kg/m2 * Unexpected change in weight of ˃4.5 kg within the past 6 months
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
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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.
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