For more details on this topic, see deuterium. A deuterium atom contains one proton, one neutron, and one electron. 2H (atomic mass 2.013553212724(78) u), the other stable hydrogen isotope, is known as deuterium and contains one proton and one neutron in its nucleus.
The caffeine in green tea, especially when taken in large amounts, can worsen diarrhea. Irritable bowel syndrome (IBS) : Green tea contains caffeine. The caffeine in green tea, especially when taken in large amounts, can worsen diarrhea and might worsen symptoms of IBS.
Brew caraway tea. To calm the intestinal spasms and discomfort that accompanies diarrhea, try sipping caraway tea. Brew it by adding a teaspoon of caraway seeds to a cup of boiling water, cover, and let steep for 15 minutes. Strain through a fine sieve before serving.