Through chemical method the alcoholic extract of cypripedium macranthum was obtained and was made to act on rat,it was discovered that the cypripedium macranthum has diuretic function.
In normal condition , the increase in the level of ADH in plasma firstly induces the effect of antidiuresis,and only when its level increases definitely ,the BP increases.
Diuretic stuff: mannitol is a kind of mild laxative lapactic, which has a special curative effect to oliguria and the kidney function failure caused by dropsy, burnt and so on.