1. Irritable Bowel Syndrome (IBS)
Peppermint oil capsules have been described as "the drug of first choice" in IBS patients,3 as it safely helps alleviate symptoms and improve quality of life. Research has shown that it is effective in children and adults alike, with one study showing a 50 percent reduction in "total irritable bowel syndrome score" among 75 percent of patients who tried it.4
2. Colonic Spasm and Gas
Peppermint oil is an effective alternative to drugs like Buscopan for reducing colonic spasms.5 It may also relax the muscles of your intestines, allowing gas to pass and easing abdominal pain. Try peppermint oil or leaves added to tea for gas relief.
3. Gastric Emptying Disorders
In people with functional gastrointestinal disorders, peppermint may be useful to enhance gastric emptying.6
4. Functional Dyspepsia (Upset Stomach and Indigestion)
Supplementing with 90 milligrams (mg) of peppermint oil, along with caraway oil, "much or very much improved" symptoms of functional dyspepsia in 67 percent of patients.7 If you have an upset stomach, try drinking a small glass of water with a few drops of peppermint essential oil added.