North birch bark containing betulin about 35%, a variety of higher fatty acids than about 35%, about 7% of tannin (endothelial contains tannin about 11%). First test yet phenolic substances, reducing substances, polysaccharides, saponins, proteins, triterpenoids, total saponins, resins and oils. Fresh leaves contain estriol longifolene birch, Betula longifolene four triterpenoids such as alcohol, tannin containing 5.19%. Small nut oil 11.44%. Birch bark containing betulin about 23%.The main chemical composition of birch - methyl salicylate, the main component of aspirin, can be seen birch has analgesic properties. Properties: analgesic, antibacterial, astringent, clean the blood, disinfectant, diuretic, insecticide, make up body and soul effect: giving vitality, and even bring exciting results. Physical effects: It is a kind of purification of oil, Can clean the blood, sweat incentive release harmful toxins leaving the body, help lymphatic drainage and avoid infection. Facilitating the flow of urine, elimination of organic waste, and to relieve the pain of cystitis. To remove urine protein, the effect is quite famous. Digestion of the bladder and kidney stones, effective against renal edema, kidney integrity for reinforcing function. Its diuretic properties can help obesity, cellulitis, and edema of the phenomenon. Eliminate the accumulation of uric acid in the joints, rheumatism, arthritis and muscle soreness is very good. It is said analgesic effect is quite strong. Skin effect: there may be effects on chronic skin problems such as eczema, psoriasis, acne and skin ulcers.