Potassium nitrate can influence the exchange of K +-Na + and H +-Na +, make the exchange of K +-H + rising, clear away the urea, reduce damage of urethra, inhibit the formation of concretion base, produce salt and diuresis effect.

• 火硝能影响 K+ - Na+ 交换与 H+ - Na+ 交换 ,使尿 K+ 与 H+ 交互升高 ,清除尿素 ,减轻尿路损伤 ,抑制结石基质形成 ,产生盐效应和利尿效应等。