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Published on: 7/14/2026
Black tea may help treat diarrhea, according to research showing it contains natural antidiarrheal properties. The tannins in black tea can reduce intestinal inflammation and help firm up stools, making it a widely used home remedy for mild digestive upset.
However, diarrhea can stem from many causes—ranging from minor dietary issues to infections or underlying conditions that need medical attention. Before assuming a home remedy is enough, it's worth understanding what's actually driving your symptoms. Take a free, instant, online symptom check to get personalized insights and clearer guidance on your next steps.
Reviewed for medical accuracy: 07/14/2026
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Submit your own QuestionResearch shows that black tea can be helpful for treating diarrhea. The study found that the hot water extract of black tea has antidiarrheal activity, which means it can help reduce or stop diarrhea. This is because black tea contains certain compounds that can slow down the gut movements and reduce the amount of water in the stool, making it less watery. However, be aware black tea contains caffeine and large amounts of black tea may also worsen diarrhea.
Here's how black tea might help with diarrhea:
If you are experiencing diarrhea, drinking black tea might be a simple and natural way to help manage it. However, if your symptoms persist or worsen, use our free AI-powered symptom checker to better understand what might be causing your symptoms and whether you should seek medical care.
(References)
Besra SE, Gomes A, Ganguly DK, & Vedasiromoni JR. (2003). Antidiarrhoeal activity of hot water extract of black tea .... Phytotherapy research : PTR, 12722145.
Sadeghian M, Torabi A, Torabi S, Vafadar M, & Oladi S. (2022). Therapeutic effectiveness of green tea leaf extract on .... European journal of translational myology, 35791616.
Jung K, Kim A, Lee JH, Cho D, Seo J, Jung ES, et al. (2022). Effect of Oral Intake of Lactiplantibacillus plantarum .... Nutrients, 35631156.
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