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Open label probiotics trial and effects on anxiety/depression in irritable bowel syndrome (IBS) patients

A pilot study, open label, placebo controlled, non-randomised trial of the influence of Lactobacillus Shirota on anxiety and depression in patients with irritable bowel syndrome (IBS)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN30654050
Enrollment
40
Registered
2008-09-12
Start date
2008-10-06
Completion date
Unknown
Last updated
2018-07-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Irritable bowel syndrome, associated anxiety and/or depression Digestive System Irritable bowel syndrome

Interventions

Eligible patients will be seen by a therapist trained in the study protocol. Over a 3-month patient recruitment period, 40 patients with a primary diagnosis of IBS will be assessed for IBS symptoms us

Sponsors

Yakult UK Ltd (UK)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Aged between 20 and 50 years, either sex 2. Diagnosis of IBS using Rome II Criteria and either moderate/severe anxiety and/or depression 3. Medication on stable dosage for at least 4 weeks before entry into the study 4. Demonstrates a full understanding of the study protocol and its requirements 5. Demonstrates willingness to take either trial probiotic or control placebo as required in the study protocol

Exclusion criteria

Exclusion criteria: 1. Already taking regular probiotic supplement 2. No IBS 3. Has IBS but not moderate/severe anxiety or depression 4. Unstable medication 5. Lactose intolerance 6. Demonstrates difficulty in understanding study protocol requirements 7. Does not agree to take either trial probiotic or control placebo as required in the study protocol

Design outcomes

Primary

MeasureTime frame
1. Beck Anxiety Inventory (16+ at baseline to determine moderate to severe anxiety) 2. Beck Depression Inventory (20+ at baseline to determine moderate to severe depression) The outcomes will be taken at baseline and again at 12 weeks. As a pilot study, no interim measures were felt necessary over this relatively short timescale.

Secondary

MeasureTime frame
1. Irritable bowel syndrome measures using ROME-II Criteria 2. Acceptability of intervention (qualitative) The outcomes will be taken at baseline and again at 12 weeks. As a pilot study, no interim measures were felt necessary over this relatively short timescale.

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026