Effects of nVNS on Stress Reactivity in IBS
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This page only displays public information reproduced from the official ClinicalTrials.gov record NCT07926945. It adds no medical advice, opinions, or eligibility judgments. The official record remains the source of truth for eligibility criteria, enrollment, and contact information.
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Official title
Effects of Non-invasive Vagal Nerve Stimulation on Clinical, Peripheral Biologic, and Brain Measures of Stress Reactivity in Irritable Bowel Syndrome: a Randomized Controlled Trial
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Irritable bowel syndrome (IBS) is a chronic disorder of gut-brain interaction that causes abdominal pain and altered bowel habits. Many people with IBS also experience symptoms outside the bowel, such as headaches, widespread pain, poor sleep, anxiety, and depression; these symptoms are especially common in females. This study focuses on stress reactivity (SR), a persistent pattern of stress-system activity that may be linked to autonomic nervous system function, immune activity, the gut microbiome, and brain processing. The investigators will enroll adults with at least moderate IBS symptoms and randomly assign them to 8 weeks of non-invasive vagal nerve stimulation (nVNS) or Usual Care. Participants assigned to nVNS will use a handheld device on the left side of the neck at home twice daily. The investigators will compare changes in IBS severity and other physical symptoms and examine whether baseline or treatment-related changes in blood, stool, heart-rate variability, sex hormones, and brain imaging measures are associated with response. The study will also explore whether treatment effects and predictors differ by sex.
Study identification
- NCT ID
- NCT07926945
- Recruitment status
- Not yet recruiting
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 200 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years to 50 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Dec 1, 2026 (Estimated)
- Primary completion
- Dec 1, 2031 (Estimated)
- Completion
- Dec 1, 2031 (Estimated)
- Last update posted
- Nov 9, 2026
2026 – 2031
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of California Los Angeles | Los Angeles | California | 90024 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT07926945, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Nov 9, 2026 · Synced Nov 12, 2026
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