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Clinical Evaluation of the Antidepressant Effect of the Use of Probiotics in Bipolar Disorder

NCT05762887 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 141

Last updated 2026-05-13

No results posted yet for this study

Summary

Bipolar Disorder (BD) is highly incapacitating and associated with premature mortality. Depressive symptoms and episodes are the most frequent cause of disability in subjects with BD and over half of patients do not respond adequately to approved treatments for this condition, showing the need for new classes of treatments to complement current pharmacotherapy. Previous studies demonstrated that the intestinal flora have potential positive or negative effects on the Central Nervous System and suggest that adding specific strains of bacteria to people's diet may have antidepressant properties.The study proposes to evaluate the clinical benefit of adding probiotics to pharmacological treatments for bipolar depression. This will be a study with 124 subjects (62 receiving probiotics and 62 placebo). The research team in this department has focused especially on non-pharmacological treatments for bipolar disorder (psychotherapy, nutrition and exercise) and is multidisciplinary in scope with psychiatrists, psychologists, nurses, physiotherapists and nutritionists participating in research projects.

Conditions

Interventions

OTHER

Probiotic Group

The 124 participants will participate in a randomized, double-blind, placebo-controlled trial in two arms. The probiotic group will consist of 62 patients. These patients will be recruited from the USP Bipolar Disorder Program. This program has an outpatient clinic that offers free medical care to a population of different ethnic groups, with the majority of subjects coming from the middle and lower social classes.

OTHER

Placebo Group

The 124 participants will participate in a randomized, double-blind, placebo-controlled trial in two arms. The placebo group will consist of 62 patients. These patients will be recruited from the USP Bipolar Disorder Program. This program has an outpatient clinic that offers free medical care to a population of different ethnic groups, with the majority of subjects coming from the middle and lower social classes.

Sponsors & Collaborators

  • Baszucki Brain Research Fund

    collaborator OTHER

  • Milken Institute

    collaborator OTHER

  • University of Sao Paulo

    lead OTHER

Principal Investigators

  • Beny lafer, PhD · University of Sao Paulo

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-01-09
Primary Completion
2025-03-01
Completion
2025-03-01

Countries

  • Brazil

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05762887 on ClinicalTrials.gov