can green tea upset your stomach

can green tea upset your stomach

Can Green Tea Upset Your Stomach?

Green tea is widely known for its many health benefits, but you may be wondering if it can also cause an upset stomach. While green tea is generally a safe beverage, some people may experience digestive issues after drinking it.

Why Does Green Tea Cause an Upset Stomach?

Green tea contains caffeine and a type of polyphenol antioxidant known as catechins. Both of these components can irritate the digestive tract and cause discomfort.

Common Symptoms of Green Tea Induced Digestive Issues

Here are some common symptoms of digestive problems caused by green tea consumption:

  • Bloating – Green tea can cause gas and gastrointestinal distress, resulting in bloating, belching and flatulence.
  • Nausea – Too much caffeine or polyphenols in green tea can cause nausea, vomiting and other signs of an upset stomach.
  • Diarrhea – Overconsumption of green tea can lead to diarrhea, which can result from caffeine-induced irritation of the digestive tract.

How to Safely Enjoy Green Tea

If you want to take advantage of its health benefits, here are a few tips on how to safely enjoy green tea:

  • Start with small amounts – Start with 1 to 2 cups of green tea per day and increase only if your body can handle it.
  • Reduce caffeine intake – Consider drinking decaffeinated or reduced-caffeine varieties of green tea.
  • Choose the right tea – Choose green tea beverages with lower levels of polyphenols and other health-promoting compounds.
  • Avoid drinking on an empty stomach – Drinking green tea on an empty stomach can increase its effects and lead to stomach upset.
  • Don’t brew tea for too long -Green tea should be steeped for no more than three to five minutes to avoid overconsumption of catechins.


In conclusion, while green tea is generally a safe beverage, it can cause digestive issues in some people. If you experience bloating, nausea or diarrhea after drinking green tea, it’s best to reduce your intake or switch to low-caffeine or decaf varieties. It’s also important to avoid drinking green tea on an empty stomach and to limit the steeping time to three to five minutes.


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