支皂素是来自毛地黄毛地黄（洋地黄）的强心苷，可能被研究用于与地高辛相似的潜在心脏应用。支皂素是钠和钾离子通道的抑制剂，会干扰ATPase的活性，并在癌症治疗中用作生长抑制剂。葡聚糖毒素是合成具有强心苷活性的葡聚糖毒素的原料。 Gitoxin is a cardiac glycoside from the Woolly Foxglove (Digitalis lanata), may be studied for its potential cardiac applications similar to those of digoxin. Gitoxin acts as in inhibitor of the sodium and potassium ion channels, interfering with ATPase activity and used in cancer treatment as a growth inhibitor. Gitoxin is a starting material for the synthesis of gitoxin derivatives with activity as cardiac glycosides.