莲子心含有4种苄基异喹啉类生物碱。实验结果表明,莲心碱3mg/kg、甲基莲心碱3mg/kg、异莲心碱5mg/kg、莲心季铵碱12mg/kgiv,前三者能显著提高乌头碱诱发大鼠心律失常的用量(μg/kg),分别从生理盐水组的87提高到190,112,133;并能提高乌头碱的致死量,且莲心碱作用优于甲基莲心碱。同于上述剂量的 Lotus seeds contain 4 benzyl isoquinoline alkaloids. The experimental results showed that the content of 3 mg/kg of lotus root, 3 mg/kg of neferline, 5 mg/kg of isoniasine, and 12 mg/kg of quaternary ammonium hydroxide can significantly increase the arrhythmia induced by aconitine in rats ( Μg/kg) was increased from 87 in the saline group to 190, 112, and 133, respectively; and the lethal dose of aconitine was improved, and the effect of the lotus root was superior to neferine. Same as above dose