Spearmint, like peppermint, is a digestive remedy. Spearmint Leaf (Mentha Spicata or Common Mint)relieves gas and indigestion, is anti-inflammatory, and stops gastrointestinal spasms. Unlike peppermint, spearmint is also diuretic. A decoction of Spearmint Leaf was formerly gargled to prevent gum disease and whiten the teeth, and it is still used in many toothpastes. It has also been used as a mild diuretic, anti-inflammatory, fever reducer and easing respiratory problems and chronic bronchitis.