**Peppermint: Benefits, Properties?** PepperMint is a plant known since ancient times for its many beneficial properties. It belongs to the Labiatae family, genus Mentha, and there are several species. It is mainly composed of: water, fiber, protein, many minerals (calcium, potassium, magnesium, copper, manganese, phosphorus, sodium), ... Purification. very useful in cases of bad breath: gargling with 5 mg of fresh leaves in 100 ml of water was a great help for this problem.