Peppermint is used for the common cold, cough, inflammation of the mouth and throat, sinus infections, and other respiratory infections. It is also used for digestive problems including heartburn, nausea, vomiting, morning sickness, irritable bowel syndrome (IBS), cramps of the upper gastrointestinal (GI) tract and bile ducts, diarrhea, bacterial overgrowth of the small intestine, and gas. Some people also use peppermint for menstrual problems, preventing spasms during endoscopy procedures, fevers, headaches, to reduce stomach bloating after surgery