Rowan include polyvitaminic plant, as the contents of various vitamins in it very long. It contains vitamins A, C, B2, K, E, and others (especially a lot of vitamin C). In addition to vitamins, mountain ash is rich in pectin, tannins, glycosides and other complex organic compounds. The fruits of mountain ash is used as a means of multi-vitamin, diuretic, astringent, laxative, and bleeding from internal bleeding. Mountain ash also reduces the amount of cholesterol in the blood, reduces the amount of fat in the liver. Useful for obesity.