Peppermint oil comes from the leaves of Mentha × piperita. Standard enteric coated capsules resist stomach acid and open in the intestines. Once there, the oil calms smooth muscle and eases spasms.
Many people use it for bloating, gas, and abdominal discomfort linked to irritable bowel syndrome. Taking it 30 to 60 minutes before meals tends to work best.
A common dose is 180 to 200 mg per capsule, up to three times a day. Follow the label.
Avoid peppermint oil if you have a bile duct obstruction or severe liver disease. It can trigger heartburn or allergic reactions. Check with a healthcare professional before using it, especially if you are pregnant, breastfeeding, or taking other medications.