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Completed

NCT Number: NCT07582965

Probiotics for Cognitive Function, Pain, and Quality of Life in People With Fibromyalgia

Fibromyalgia is a complex chronic disorder in which emerging evidence suggests a relevant role of the gut microbiota in modulating physiological processes through the gut-brain axis. In this context, probiotics have been proposed as a potential therapeutic strategy for symptom management in fibromyalgia.

This study aimed to evaluate the effects of a multispecies probiotic formulation administered over 12 weeks on pain and fatigue in patients with fibromyalgia. Secondary outcomes included sleep disturbances, cognitive function, and emotional symptoms.

This was a quadruple-blinded, randomized, placebo-controlled clinical trial. Participants were randomly assigned to receive either a daily capsule of a multispecies probiotic (Teoliance HPi10, Therascience) containing Lactobacillus acidophilus LA-3, Lactobacillus rhamnosus GG, Bifidobacterium BS01, Lactobacillus plantarum BG112, Streptococcus thermophilus SP4, Lactobacillus casei LCO3, and Lactobacillus reuteri LR92, or placebo, for 12 weeks. Clinical outcomes were assessed using validated questionnaires including VAS, BPI, SF-36, MOS, HADS, and FIQ.

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Key information

Conditions

Fibromyalgia (FM) Fibromyalgia Muscular Diseases Musculoskeletal Diseases Nervous System Diseases Neuromuscular Diseases Rheumatic Diseases

Age range

18 year and older

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Hospital de Sant Pau

Barcelona, Spain

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Female participants aged 18 years or older.
  • Diagnosis of fibromyalgia (severity grade 1-4) according to the American College of Rheumatology (ACR) criteria, established at least 1 year prior to enrollment.
  • Body mass index (BMI) < 30 kg/m².
  • Ability and willingness to provide written informed consent.

Exclusion criteria

  • Pregnancy or breastfeeding.
  • Use of probiotics within 6 months prior to study enrollment.
  • Use of antibiotics within 6 months prior to study enrollment.
  • History of inflammatory bowel disease.
  • Pre-existing psychiatric disorder diagnosed prior to fibromyalgia diagnosis.
  • Active cancer.
  • History of gastrointestinal cancer.
  • History of chemotherapy treatment.
  • History of radiotherapy in the abdomino-pelvic region.
  • Participation in another clinical trial.

Treatment and study plan

Multispecies Probiotic (Teoliance HPi10)

Dietary Supplement

Participants receive a daily oral capsule of a multispecies probiotic formulation (Teoliance HPi10, Therascience) for 12 weeks. Each capsule contains Lactobacillus acidophilus LA-3, Lactobacillus rhamnosus GG, Bifidobacterium animalis subsp. lactis BS01, Lactobacillus plantarum BG112, Streptococcus thermophilus SP4, Lactobacillus casei LCO3, and Lactobacillus reuteri LR92 (approximately 10⁹ CFU per capsule). The intervention is administered once daily.

Placebo

Other

Participants receive a matching placebo capsule identical in appearance to the active product but without active probiotic strains, administered orally once daily for 12 weeks.

Primary outcomes

  1. Pain from baseline to Week 12, assessed using Fibromyalgia Impact Questionnaire (FIQ).

    Time frame: Baseline to Week 12

    Change from baseline to Week 12 in pain intensity in patients with fibromyalgia. Pain intensity will be assessed using the Fibromyalgia Impact Questionnaire (FIQ 0-100). The primary endpoint will be the between-group difference in change over time (Group × Time interaction).

Secondary outcomes

  1. Pain from baseline to Week 12, assessed using the Visual Analogue Scale (VAS).

    Time frame: From baseline to Week 12

    Change from baseline to Week 12 in pain intensity in patients with fibromyalgia. Pain intensity will be assessed using the Visual Analogue Scale (VAS; 0-10). The primary endpoint will be the between-group difference in change over time (Group × Time interaction).

  2. Fatigue from baseline to Week 12, assessed using Fibromyalgia Impact Questionnaire (FIQ).

    Time frame: From baseline to Week 12

    Change from baseline to Week 12 in fatigue severity in patients with fibromyalgia. Fatigue severity will be evaluated using validated patient-reported outcome measures, including the Fibromyalgia Impact Questionnaire (FIQ 0-100). The primary endpoint will be the between-group difference in change over time (Group × Time interaction).

  3. Sleep quality

    Time frame: Baseline to Week 12

    Sleep quality will be assessed using the Medical Outcomes Study Sleep Scale (MOS-Sleep 0-100). This validated questionnaire evaluates multiple dimensions of sleep, including sleep disturbance, sleep adequacy, somnolence, and snoring. Higher scores indicate poorer sleep quality. Assessments will be performed at baseline and Week 12.

  4. Anxiety and depression

    Time frame: Baseline to Week 12

    Anxiety and depressive symptoms will be assessed using the Hospital Anxiety and Depression Scale (HADS). This instrument includes two subscales (anxiety and depression), each ranging from 0 to 21, with higher scores indicating greater symptom severity. Scores ≥8 on either subscale indicate clinically relevant symptoms. Assessments will be performed at baseline and Week 12.

  5. Health-related quality of life

    Time frame: Baseline to Week 12

    Health-related quality of life will be measured using the Short Form-36 Health Survey (SF-36). This instrument assesses eight domains of physical and mental health, with scores standardized from 0 to 100, where higher scores indicate better quality of life. Assessments will be performed at baseline and Week 12.

  6. Fibromyalgia impact

    Time frame: Baseline to Week 12

    The overall impact of fibromyalgia will be assessed using the Fibromyalgia Impact Questionnaire (FIQ 0-100), which evaluates physical functioning, work status, depression, anxiety, sleep, pain, stiffness, fatigue, and overall well-being. Higher scores indicate greater disease impact. Assessments will be performed at baseline and Week 12.

Sponsors and collaborators

Lead sponsor

Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau

Other

Registry information

Official study title

Estudio Piloto, Prospectivo, Randomizado, Doble Ciego Para Estudiar el Efecto Sobre función Cognitiva, Dolor y Calidad de Vida de un Tratamiento Con probióticos en Pacientes Con Fibromialgia.

Important dates

Study start
2020
Primary completion
2023
Study completion
2023
First posted
May 13, 2026
Registry last updated
May 13, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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