European White Birch (Betula pendula)
The plant is a strong diuretic and laxative. Generally it is considered useful in reducing inflammation, increasing perspiration, and relieveing  pain. Used  internally, Birch has shown to be very helpful in treatment of arteriosclerosis, arthritis, cystitis, fevers, gout, rheumatism, and kidney stones. External use is helpful in cases of psoriasis and eczema. Silver birch’s sap has strong astringent properties, increasing elasticity of the skin. Safety: Some herbs could react with certain medication. Therefore, it is advisable to consult your doctor before consumption of any herb.