... 2008 100% Natural Herbal Extract In StockProduct Name: Peppermint P.E. PowderLatin Name: Mentha arvensis Part Used: leafSpecification: 5 ... (GI) spasms. A specific combination product containing peppermint leaf (Iberogast, Medical Futures, Inc) also seems to improve ... symptoms of heartburn. The combination includes peppermint leaf plus clown’s mustard plant, German chamomile, caraway, ...