The gastrointestinal tract is often relieved by peppermint as it relaxes the intestinal wall’s muscles. As it increases saliva, swallowing increases and relieves cramps, improves appetite, and relieves pain from motion sickness, nausea, and irritable bowel syndrome. Peppermint is used orally in tea to relieve respiratory conditions including coughing, colds, acute respiratory difficulties, and viral, fungal, and bacterial infections.