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CompletedNCT07364578Updated Jul 24, 2026

Probiotic Supplements in Osteoarthritis

A Phase 3 interventional study of Probiotic Formula and Control in Osteoarthritis, Knee, sponsored by Beni-Suef University. Completed at 1 site in Egypt. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-24.

Sponsored by Beni-Suef University · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Registered 11 months after the study started (first participant enrolled Feb 2025, registered Jan 2026).
Phase
Phase 3
Study type
Interventional
Enrollment
146
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The current study aims to evaluate the effectiveness of adding probiotics to the standard of care in improving OA patient-related outcomes such as pain, stiffness, and physical activity.

Read the detailed description

Osteoarthritis (OA) is a severe progressive chronic arthropathy causing articular remodeling and inflammation of synovial tissue. The disease involves the entire synovial joint, including the cartilage, joint lining, and subchondral bone. OA causes pain, swelling, and stiffness, consequently hindering the patient's ability to perform their main daily activities, which often leads to social isolation and depression. Up till now, there is no cure for OA treatment options target either symptomatic relief (mainly pain) such as acetaminophen, glucosamine, chondroitin sulfate, and non-steroidal anti-inflammatory drugs (NSAIDs) or structure repair.

Probiotics are live and active microorganisms widely known as the gut's beneficial bacteria. They are taken to alter the GI flora and provide health benefits such as achieving optimal digestion and immunological function.

02

Conditions studied

  • Osteoarthritis, Knee
03

In context

Osteoarthritis, Knee

3,302 studies on the registry are indexed under Osteoarthritis, Knee; 608 are open to participants now.

This study's enrollment of 146 is above the median of 70 across 2,731 interventional studies indexed under Osteoarthritis, Knee.

Browse Osteoarthritis, Knee studies →

Lead sponsor

Beni-Suef University is the lead sponsor of 333 studies on the registry; 116 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

Patients (both sexes) aged above 18 years who met the American College of Rheumatology (ACR) clinical criteria for KOA [7] and had symptomatic OA of at least one knee (index knee).

Exclusion criteria

Exclusion Criteria:

  1. Rheumatoid arthritis or other active generalized inflammatory comorbidities affecting the gastrointestinal tract (IBD, celiac disease)
  2. Performed a total knee replacement on the affected knee or the waiting list for joint replacement
  3. surgeries (such as gastric bypass) or Other concomitant injuries can override OA symptoms or interfere with physical activity.
  4. Malabsorption disorders, systemic organ failure (liver, renal, cardiac)
  5. Use corticosteroids with doses above 10 mg/day or Intra-articular injections during the previous 6 months.
  6. Recent antibiotic treatment (i.e., \<2 months before the beginning of the study).
  7. Pregnancy/breastfeeding
  8. Participants who smoked more than 10 cigarettes per day were excluded.
  9. Immunosuppressive treatment or impaired immune system
  10. Chronic or acute diarrhea
  11. Blood/plasma donation/transfusion during the 3 months of the study
  12. Non-controlled diabetes
  13. Allergy with regards to any of the study product ingredients.
  14. Post-traumatic OA (e.g., fractures), congenital hip deformities, or degenerative or non-degenerative neurological conditions can alter pain perception.
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
146 participants (actual)

Study arms

  • Other
    Control group

    OA patients will receive only standard of care

    Drug: Control

  • Experimental
    probiotic group

    OA patients will receive probiotic supplements (2 times daily) added to the standard of care.

    Drug: Probiotic Formula

Interventions

  • DrugProbiotic Formula

    probiotic supplements (lactobacillus, 2 times daily) added to standard of care

  • DrugControl

    standard of care

06

What researchers measure

Primary outcomes

  1. The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)

    A self-administered measure used in assessing pain, stiffness, and function in OA patients

    Time frame: 3 months

  2. Visual Analogue Scale (VAS)

    A pain rating scale that represents the severity of symptoms from 0 "no symptoms" to 10 "very severe symptoms." The patient marks the line according to his/her perception of their current state.

    Time frame: 3 months

Secondary outcomes

  1. The Knee Injury and Osteoarthritis Outcome Score (KOOS)

    a questionnaire designed to assess short and long-term patient-relevant outcomes following knee injury self-administered and assesses five outcomes: pain, symptoms, activities of daily living, sport and recreation function, and knee-related quality of life.

    Time frame: 3 months

07

Study locations

1 site
  • Asmaa Abdelfattah Elsayed
    Banī Suwayf, 82511, Egypt
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 24, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07364578
Lead sponsor
Beni-Suef University
Responsible party
Asmaa Abdelfattah Elsayed (Lecturer of clinical pharmacy, Beni-Suef University) — Principal investigator
First posted
Jan 23, 2026
Start date
Feb 15, 2025
Primary completion
Feb 15, 2026
Completion
May 1, 2026
Last update
Jul 24, 2026

Study contacts

Asmaa Elsayed
principal investigator · Beni-Suef University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.

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