Japanese mint (Mentha arvensis var. piperascens) is an aromatic herb of temperate region. The oil and its principal aroma-compound menthol have cooling and gastro-stimulant properties, for which it is used in pharmaceuticals, food flavour, confectionery, cosmetics, beverages and related industries.Medicinal plants constitute a group of industrially important crops, which are of immense social, economic and commercial value. Plant based drugs are being increasingly preferred in medical in medical science today. Mint is one of it.