Archaeological evidence has shown that Peppermint is 'the world's oldest medicine' and is in use since time immemorial. Peppermint is rich in menthol content and is used to flavor tea confectionery ice cream chewing gum and toothpaste. Its oil contains menthone and menthyl esters. Peppermint is also used in shampoos and soaps which gives a cooling effect on the skin. Scientific studies have measured the useful effects of enteric-coated peppermint capsules for treating symptoms of irritable bowel syndrome (IBS) such as pain bloating gas and diarrhea.

The 73rd Annual Scientific Meeting of the American College of Gastroenterology in Orlando saw several studies presented relating to the efficacy and safety of using probiotics in the treatment of irritable bowel syndrome. Probiotics were found both to alleviate symptoms and help normalize the frequency of bowel movements for patients suffering diarrhea or constipation relating to Irritable Bowel Syndrome (IBS). Dr. Paul Moayyedi and colleagues of several universities undertook a meta-analysis which was then presented at the ACG Annual Scientific meeting in Orlando.