Can probiotics be effective in treating diarrhea?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Probiotics may help treat diarrhea by restoring beneficial bacteria in the gut, particularly when diarrhea is caused by infections or antibiotic use. These live microorganisms support digestive balance, shorten symptom duration, and promote overall gut health.

If you're experiencing diarrhea, it's important to understand the underlying cause before choosing a treatment. Symptoms can point to anything from a mild infection to a more serious condition, and probiotics aren't always the right solution. Take a free, instant, online symptom check to better understand what's going on and confidently navigate your next steps.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Discover why your diarrhea won’t improve Learn if diarrhea needs medical care Find likely causes of diarrhea today See OTC options for diarrhea relief Find a doctor for diarrhea treatment Understand home remedies for diarrhea recovery Find out if diarrhea is something serious

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Explanation

Probiotics are live bacteria that are good for your gut health. They can help treat diarrhea, especially when it is caused by infections. Research shows that probiotics can shorten the duration of diarrhea and make it less severe.

How Probiotics Help:

Restoring Balance: When you have diarrhea, the balance of good and bad bacteria in your gut is upset. Probiotics help restore this balance by adding more good bacteria.
Fighting Infections: Some probiotics can fight off the bad bacteria or viruses causing the diarrhea.

Types of Diarrhea:

Acute Infectious Diarrhea: Probiotics are particularly effective in treating diarrhea caused by infections, like from viruses or bacteria.
Antibiotic-Associated Diarrhea: They can also help when diarrhea happens after taking antibiotics, which can kill both good and bad bacteria.

Overall, using probiotics can be a safe and helpful way to manage diarrhea, but if you're unsure about your symptoms, you can check your symptoms with a free AI symptom checker before consulting with a healthcare provider about treatment options.

(References)

Guarino A, Guandalini S, & Lo Vecchio A. (2015). Probiotics for Prevention and Treatment of Diarrhea. Journal of clinical gastroenterology, 26447963.
Collinson S, Deans A, Padua-Zamora A, Gregorio GV, Li C, Dans LF, & Allen SJ. (2020). Probiotics for treating acute infectious diarrhoea. The Cochrane database of systematic reviews, 33295643.
Wilkins T, & Sequoia J. (2017). Probiotics for Gastrointestinal Conditions: A Summary of .... American family physician, 28762696.

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