Peppermint Leaf helps to promote good digestion and improve the appetite. Some studies have shown that Peppermint lessens the amount of time food spends in the stomach by stimulating the gastric lining, and because Peppermint works to increase stomach acidity and stimulates the flow of bile, it helps to digest food before passing into the intestines and colon. This could make it especially useful in treating Crohn's disease. Peppermint calms a queasy stomach and is considered a fine herbal remedy for nausea and vomiting. It is said to be especially calming for the lower bowel and helpful in relieving diarrhea and irritable bowel syndrome (IBS). As an antispasmodic, Peppermint Leaf is helpful in alleviating cramps, including menstrual cramps, and stomach pain; and it eases griping. Peppermint eases nervous agitation and anxiety. It has a relaxing effect on the entire body and can help soothe a nagging cough. It is an excellent expectorant that helps to loosen and expel phlegm from the respiratory system, thereby easing congestion of the lungs and nasal passages.