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Does Probiotics help with anxiety?

Yes, for most people. 90% of 29 people who reported on Probiotics for anxiety say it improved. 10% noticed no change and 0% say it got worse. That is above the typical result for anxiety (85% across 95 options).

Anxiety: what users report
90%better29 reports · medium confidence
26 better3 no change0 worse

Ranked #41 of 95 for anxiety.

What people say about Probiotics and anxiety

“I've done years of CBT, mediation, psychotherapy, exercise, sunlight exposure, probiotics ... and they helped a lot with other stuff but not the anxiety.”
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“Probiotics can be helpful for anxiety as well. Garden of Life has a probiotic product called mood+ which is pretty good. I don't think it will cure your anxiety but I think it will help significantly.”
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“have you tried probiotics and fermented foods? I have been focusing on gut health as a path to healing my anxiety and have seen improvement.”
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What the research says

AResearch: Strong2,293 meta-analyses · 2,235 trials on PubMed
Nutr Rev · 2025
Effects of Prebiotics and Probiotics on Symptoms of Depression and Anxiety in Clinically Diagnosed Samples: Systematic Review and Meta-analysis of Randomized Controlled Trials

Conclusion: Probiotics showed substantial reductions in depression symptoms and moderate reductions in anxiety symptoms. Prebiotics showed a nonsignificant trend toward reducing depression. An adjunctive mental health treatment approach that diagnoses, monitors, and treats the gut microbiome alongside traditional pharmacological treatment holds promise for clinical practice.

Side effects people mention

stomach issues 11brain fog 2diarrhea 2withdrawal 1fatigue 1

What else is Probiotics used for?

Digestion 84%of 86Mood 100%of 54Energy 80%of 10Focus 70%of 10Sleep 71%of 7Skin & hair 100%of 5

Information only — not medical advice. How we count

Does Probiotics help with anxiety? 90% of 29 users say yes — PlainPill