塊莖含澤瀉醇(alisol)A、B、C,澤瀉醇A單乙酸酯(alisol A monoacetate),澤瀉醇B單乙酸酯(alisol B monoacetate),澤瀉醇C單乙酸酯(alisol C monoacetate),表澤瀉醇(epialisol) A,澤瀉薁醇(alismol),澤瀉薁醇氧化物(alismoxide),16β-甲氧基澤瀉醇B單乙酸酯(16β-methoxyalisol B monoacetate),16β-羥基澤瀉醇B單乙酸酯(16β-hydroxyalisol B monoacetate),谷甾醇-3-O-硬脂醯基-β-D-吡喃葡萄糖甙(sitosterol-3-O-steroyl-β-D-glucopyranoside)。還含膽鹼(choline),糖和鉀、鈣、鎂等元素。