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Probiotic supplementation may improve fatigue and pain symptoms in patients with multiple sclerosisProbiotics may help manage fatigue and pain in multiple sclerosis

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Key Takeaway
Consider probiotics as a potential intervention for managing fatigue, pain, and inflammation in patients with multiple sclerosis.

This meta-analysis evaluated the efficacy of probiotic supplementation across various strains, doses, and durations in 282 adults with multiple sclerosis. The study focused on motor outcomes, mental health, and biochemical markers to determine the potential for symptom management.

The synthesis indicates that probiotic supplementation provides significant beneficial effects for motor outcomes, specifically regarding fatigue and pain. Additionally, the analysis reported a moderate overall benefit for biochemical outcomes, including systemic inflammatory markers such as high-sensitivity C-reactive protein. However, no significant improvements were observed in disability status as measured by the Expanded Disability Status Scale, nor were there statistically significant changes in mental health outcomes like depression or general psychological well-being.

Findings regarding oxidative stress parameters, including malondialdehyde and antioxidant capacity, were inconsistent across the included studies. The authors note limited evidence regarding the effects of probiotics on mental health. Clinically, probiotics may offer moderate benefits for symptom management in multiple sclerosis, particularly for fatigue, pain, and inflammation, while the evidence for mental health improvements remains limited.

How this fits prior evidence

This meta-analysis extends the understanding of probiotic use in multiple sclerosis by identifying specific benefits for fatigue and pain. It builds upon prior evidence showing that vestibular rehabilitation improves balance, walking speed, and fatigue in patients with multiple sclerosis. While previous data on at-risk populations showed only a non-significant trend toward clinical improvement, this meta-analysis specifically identifies moderate benefits for inflammatory markers and significant improvements in fatigue and pain for those with a confirmed diagnosis.

Living with multiple sclerosis often means dealing with more than just physical symptoms. Many people struggle with constant fatigue and chronic pain, which can make daily tasks feel like a mountain to climb. A review of data from 282 adults with multiple sclerosis looked at how probiotic supplements might help manage these specific challenges.

The analysis found that taking probiotics led to significant improvements in motor outcomes, specifically regarding fatigue and pain. The researchers also found a moderate benefit in biochemical markers, such as systemic inflammatory markers. These findings suggest that probiotics could be a helpful tool for managing the physical toll of the condition.

While the results for fatigue and inflammation were promising, the evidence was not as clear for other areas. The study did not find significant changes in overall disability status or mental health outcomes like depression. Because the evidence for mental health is limited, it is important to view these findings as a specific way to target physical symptoms rather than a total solution.

What this means for you:
Probiotics may help reduce fatigue and pain in people with multiple sclerosis, though they do not change disability status.

Common questions

Can probiotics help with the symptoms of multiple sclerosis?

Yes, the study found that probiotic supplementation provided significant benefits for motor outcomes, specifically for managing fatigue and pain. It also showed a moderate benefit for biochemical markers like systemic inflammatory markers. However, it did not show significant improvements in overall disability status.

Do probiotics improve mental health for people with MS?

The study did not find statistically significant changes in mental health outcomes, such as depression or general psychological well-being. Because the evidence for mental health is limited, these results should be discussed with a doctor to determine the best approach for your specific needs.

What did the study find regarding inflammation and oxidative stress?

The research showed a moderate overall benefit for systemic inflammatory markers. Results regarding oxidative stress were inconsistent; while some studies showed improved antioxidant capacity and lower malondialdehyde levels, the results were not consistent across all studies.

Study Details

Study typeMeta analysis
Sample sizen = 282
EvidenceLevel 1
PublishedSep 2026
View Original Abstract ↓
BACKGROUND AND AIMS: This systematic review and meta-analysis aimed to evaluate the effects of probiotic supplementation on physical, mental, and biochemical outcomes in adults with multiple sclerosis (MS). METHODS: A comprehensive search of major databases (PubMed, Embase, Scopus, Cochrane Library, and Web of Science) following PRISMA guidelines for studies published up to December 2025. RESULTS: Six randomized placebo-controlled trials (RCTs) involving 282 participants met the inclusion criteria. Interventions varied in probiotic strains, doses, and duration. Quantitative synthesis showed that probiotic supplementation produced significant beneficial effects on motor outcomes, particularly fatigue and pain. No significant improvements were observed in disability status measured by the Expanded Disability Status Scale. Mental health outcomes, including depression and general psychological well-being, did not demonstrate statistically significant changes following probiotic use. In addition, biochemical analyses revealed a moderate overall benefit, driven primarily by reductions in systemic inflammatory markers, including high-sensitivity C-reactive protein. Effects on oxidative stress parameters were inconsistent, though some studies reported decreased malondialdehyde levels and improved antioxidant capacity. CONCLUSION: Overall, findings suggest that probiotics may offer moderate benefits for symptom management in MS, particularly for fatigue, pain, and inflammation, while evidence for effects on mental health remains limited. Further well-designed, multi-ethnic RCTs integrating microbiome and immunological assessments are needed to confirm these results and clarify underlying mechanisms. PROSPERO registration number: CRD42024511183.
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